Situation Report

Situation Update (UTC)

As of 17 September 2026, 14:44 UTC

Key updates since last sitrep

• Air and missile activity expanded across central and southern Ukraine after the last sitrep. Ukrainian Air Force reported jet-UAV tracks toward Zghurivka/Myronivka (Kyiv Oblast), Brovary/Kyiv (Kyiv Oblast) from the east, Vasylkiv/Fastiv (Kyiv Oblast) from the south, and Irpin/Bucha (Kyiv Oblast); a missile track through Dnipropetrovsk Oblast toward Pavlohrad; jet UAVs through Pyatykhatky (Dnipropetrovsk Oblast) toward Poltava Oblast; and a jet UAV past Krasnosilka (Odesa Oblast) toward Odesa. A Kyiv air alert was declared at 13:32 UTC and lifted at 13:59 UTC; Kyiv City Military Administration reported debris fell on an educational institution in Sviatoshynskyi district, Kyiv, with no damage or casualties (13:22–14:01 UTC, Повітряні Сили ЗС України / КМВА, HIGH).
• President Zelensky announced a successful Ukrainian interceptor test against a jet-propelled Shahed-type UAV. In an official statement following a report from Commander-in-Chief Mykhailo Drapatyi, Zelensky said there was “another positive result” from interceptor trials and one shootdown, that Ukraine would scale the capability, and that new active and long-range operations are being prepared. He also cited “needed dynamics” in Donetsk Oblast, preparation of reinforcements on the Kupiansk direction, destruction of occupier positions on the Oleksandrivka direction, and thanked the 82nd and 95th Separate Air Assault Brigades (14:09 UTC, Zelenskiy / Official, HIGH as an official statement).
• Colonelcassad confirmed another body exchange: Russia received 23 bodies and handed over 252 Ukrainian dead. This corroborates the earlier SOTA reporting on the 252-to-23 exchange; identity and nationality composition remain unverified (13:32 UTC, Colonelcassad, MEDIUM-HIGH for the exchange claim).
• Russian channels claimed FAB strikes on Serdobino, Vovchansk district, Kharkiv Oblast, targeting a Ukrainian personnel concentration. The claim states the strike disrupted UAF reinforcement intended for a group allegedly encircled near Malaya Volchya (Kharkiv Oblast); video shows an aerial strike in a treeline but does not independently confirm the location or target character (13:55 UTC, Поддубный |Z|О|V| edition, LOW-MEDIUM).
• A Russian pro-war channel claimed capture of Rozovka, Zaporizhzhia Oblast, by the 5th Separate Tank Brigade, 36th Combined Arms Army, “Vostok” grouping. It claims control of more than 5 sq km and Ukrainian losses including up to a platoon, three armored vehicles, eight automobiles, seven light vehicles, 17 ground robotic complexes and more than 30 heavy “Baba Yaga” hexacopters; no viewable geolocated evidence was provided (13:37 UTC, Дневник Десантника🇷🇺, LOW).
• A Russian milblogger reported four soldiers of the 41st Motor Rifle Regiment were killed in Myropillia after being ordered to “enter” positions in a town reportedly “liberated” five months ago. The post criticises regimental commander Vasily Alekseev (“Tsiklon”) and claims movement is beginning in the Myropillia–Zapsillia area, indicating internal Russian criticism of falsified liberation reporting (14:14 UTC, Северный канал, LOW-MEDIUM for the incident; MEDIUM for the internal criticism).
• Russian channels repeated a claim of a strike on a Kyivstar office/building housing telecom equipment. The attached graphic only shows a Ukrainian-language Kyivstar attack message, with no damage photograph, location or timestamp (13:19 UTC, Операция Z, LOW).
• DPRK labour and drone-production claims re-emerged. A Bloomberg headline relayed by Ukrainian channels reports Russia using North Korean workers to make drones, with Telegram text adding about 25,000 workers, Alabuga and student-visa cover; Rybar additionally discussed possible North Korean use of Geran-5 drones against South Korean and Japanese targets (13:20–13:46 UTC, Рыбарь / ЦАПЛІЄНКО_UKRAINE FIGHTS, MEDIUM for the Bloomberg headline, LOW for the expanded workforce and transfer specifics).

Operational picture (by sector)

• Kupiansk axis (Kharkiv Oblast): Updated. Russian drone operators of the 1st Motorized Rifle Battalion, 1st Motorized Rifle Regiment, RVSN, claimed destruction of Ukrainian R-18 heavy drones on the Velykoburluk direction; footage shows a thermal drone engagement but unit and target identification remain unverified (13:17 UTC, Два майора, MEDIUM for footage, LOW for attribution). President Zelensky stated reinforcements are being prepared on the Kupiansk direction (14:09 UTC, Zelenskiy / Official, HIGH). No confirmed line-of-contact change.
• Kharkiv city and northern Kharkiv (Kharkiv Oblast): Updated. Russian channels claimed FAB strikes on Serdobino, Vovchansk district, against a UAF personnel concentration allegedly meant to reinforce an encircled group near Malaya Volchya; carried-forward MoD-level claims of Malaya Volchya control and encirclement remain UNCONFIRMED (LOW). No independent strike BDA. Current weather at Kharkiv/Vovchansk (14:30 UTC): 18.7 °C, clear, cloud 5%, wind 1.4 m/s (HIGH).
• Izium area (Kharkiv Oblast): No significant change.
• Sumy / northern border (Sumy Oblast): No significant change. The previous cycle’s residential KAB strike in Sumy remains the latest confirmed casualty event.
• North Slobozhanshchyna and Kursk directions (Sumy/Kharkiv border belt): No significant change. Carried-forward Russian claims of Malaya Volchya control and encirclement remain UNCONFIRMED.
• South Slobozhanshchyna axis (Kharkiv/Donetsk border belt): No significant change. Assessed contested.
• Krasnyi Lyman / northern Donetsk (Donetsk Oblast): Updated (Russian internal claim). A Russian milblogger reported four 41st Motor Rifle Regiment soldiers killed at Myropillia (Donetsk Oblast, as reported) after being ordered into a town reportedly liberated five months ago; this is a Russian-sourced admission of a discrepancy between reported and actual control (14:14 UTC, Северный канал, LOW-MEDIUM). The carried-forward Ukrainian 66th OMBr / 3rd Army Corps claim of clearing Seredne and pushing Russian forces across the Nitrus River under Operation “Vivaldi” remains LOW-MEDIUM and unconfirmed by independent geolocation.
• Sloviansk axis (Donetsk Oblast): No significant change.
• Kramatorsk axis (Donetsk Oblast), including Chasiv Yar, Druzhkivka, Kostiantynivka: No significant change beyond information activity.
• Pokrovsk / Dobropillya / southern Donetsk (Donetsk Oblast): Updated. Russian MoD released footage of Tsentr grouping snipers allegedly eliminating Ukrainian drones to cover artillery positions on the Dobropolye direction; footage shows a thermal engagement but the specific kill and unit context are unverified (14:03 UTC, MoD Russia, MEDIUM for footage release, LOW for tactical result). No confirmed line-of-contact change.
• Oleksandrivka axis (Donetsk/Dnipropetrovsk boundary): Updated. President Zelensky stated Ukrainian forces are destroying occupier positions on the Oleksandrivka direction (14:09 UTC, Zelenskiy / Official, HIGH as official statement). No independent line-of-contact change.
• Huliaipole / west Zaporizhzhia axis (Zaporizhzhia Oblast): Updated. Russian pro-war channel claimed capture of Rozovka (Zaporizhzhia Oblast) by the 5th Separate Tank Brigade, 36th Combined Arms Army, with heavy claimed Ukrainian losses; the claim is single-source and lacks geolocated evidence (13:37 UTC, Дневник Десантника🇷🇺, LOW). Carried-forward MoD-level “liberation” claim for Rozovka remains UNCONFIRMED.
• Orikhiv axis (Zaporizhzhia Oblast): Updated (information activity). Russian channel Воин DV accused Ukraine’s 92nd Separate Assault Brigade and Colonel Nashubin of using AI to fabricate a flag-raising in Chervona Krynytsia, juxtaposing it with footage of a soldier being struck immediately after raising a flag; the AI accusation is unproven and the video does not independently verify either claim (14:01 UTC, Воин DV, LOW-MEDIUM). No confirmed line-of-contact change. Weather at Orikhiv (14:30 UTC): 20.8 °C, partly cloudy, cloud 54%, wind 1.1 m/s (HIGH).
• East/West Zaporizhzhia directions, including Zaporizhzhia city and district: No significant new strike BDA. The previous cycle’s Zaporizhstal damage claims and the «Архангел Спецназа» package were re-posted without new evidence.
• Prydniprovsk / Kherson direction (Kherson Oblast): No significant change. Weather at Kherson (14:30 UTC): 22.1 °C, mainly clear, cloud 21%, wind 1.2 m/s (HIGH).
• Mykolaiv / Odesa direction (Mykolaiv and Odesa Oblasts, including Black Sea): Updated (alerting only). A jet UAV was tracked past Krasnosilka (Odesa Oblast) toward Odesa; no impact was reported in this cycle (13:56 UTC, Повітряні Сили ЗС України, HIGH as alerting). Carried-forward Mayaky crossing tanker/bridge claims and Chornomorsk vessel claims remain LOW/UNCONFIRMED.
• Kyiv / Kyiv Oblast: Updated. Multiple jet-UAV tracks into Kyiv Oblast and Kyiv city; Kyiv alert 13:32–13:59 UTC; debris fell on an educational institution in Sviatoshynskyi district, Kyiv, with no damage or casualties (13:22–14:01 UTC, Повітряні Сили ЗС України / КМВА, HIGH). Russian channels repeated a claimed strike on a Kyivstar office/building; no visual damage evidence (13:19 UTC, Операция Z, LOW).
• Chernihiv / Poltava / Cherkasy / Kirovohrad / Dnipropetrovsk rear corridors: Updated (alerting). A missile track went through Dnipropetrovsk Oblast toward Pavlohrad, and jet UAVs passed through Pyatykhatky (Dnipropetrovsk Oblast) toward Poltava Oblast; no impacts reported in these messages (13:27; 13:46 UTC, Повітряні Сили ЗС України, HIGH as alerting). The previous cycle’s «Архангел Спецназа» strike claims for Poltava, Kirovohrad and Dnipropetrovsk rear sites remain LOW.
• Russian rear and occupied territories: Updated (administrative/information only). Russian domestic and occupied-territory items included a claimed Ulyanovsk FSB arrest of a criminal figure with a future-dated “July 2026” reference, and Colonelcassad commentary on Saudi pipeline repairs; none directly affects the Ukrainian front (14:00 UTC, Треш Ульяновск; 14:01 UTC, Colonelcassad, LOW for operational relevance).
• Belarus / northern flank: Updated. Germany will deploy four Eurofighter aircraft to Lielvarde Air Base, Latvia, for about a week around Latvia’s 3 October Saeima elections, following increased Baltic airspace violations by drones; several dozen German military personnel and specialists will accompany them (13:30 UTC, SOTA, MEDIUM). Carried-forward “no signs of offensive grouping formation on the Volyn and Polissia directions” stands (MEDIUM).

Deep strikes & air defense

• Ukrainian Air Force live alerting, this cycle: jet UAVs toward Zghurivka, Myronivka, Brovary/Kyiv, Vasylkiv/Fastiv, Irpin/Bucha, Pyatykhatky and Krasnosilka; a missile through Dnipropetrovsk Oblast toward Pavlohrad. All are official alerts; no impacts were reported in the alert messages (13:22–13:56 UTC, Повітряні Сили ЗС України, HIGH for alerting).
• Kyiv air defense and debris: Kyiv alert 13:32–13:59 UTC; debris fell on an educational institution in Sviatoshynskyi district, Kyiv, without damage or casualties (14:01 UTC, КМВА, HIGH).
• Ukrainian interceptor success against jet Shahed: President Zelensky announced another positive interceptor trial with a shootdown, and stated Ukraine will scale the capability (14:09 UTC, Zelenskiy / Official, HIGH as official claim).
• Russian FAB strike claim on Serdobino (Kharkiv Oblast): claimed Aerospace Forces strike on a UAF personnel concentration intended to reinforce an encircled group near Malaya Volchya; video confirms a strike in a treeline but not the location or target type (13:55 UTC, Поддубный |Z|О|V| edition, LOW-MEDIUM).
• Russian repeat strike claim on Kyivstar: claimed repeat strike on a Kyivstar office/building with telecom equipment; the attached graphic is not damage evidence (13:19 UTC, Операция Z, LOW).
• Russian re-post of overnight strike package: «Архангел Спецназа» re-posted the same claim of strikes on Kyiv drone workshops including «Pegas-Arms», the De Novo data centre, a Brovary logistics hub, ООО «Данай» near Kirovohrad, the Mashivka repair base, Zaporizhstal/«Iskra» and Dniester bridges at Mayaky plus an Artsyz substation; no new evidence or BDA (13:15 UTC, АРХАНГЕЛ СПЕЦНАЗА, LOW).
• Russian counter-drone claims: Russian MoD snipers allegedly eliminated Ukrainian drones on the Dobropolye direction to cover artillery positions; footage shows a thermal engagement but not conclusive kill attribution (14:03 UTC, MoD Russia, MEDIUM for footage, LOW for result). Russian UAV operators claimed destruction of Ukrainian R-18 heavy drones on the Velykoburluk direction (13:17 UTC, Два майора, MEDIUM for footage, LOW for target identification).

Enemy activity / threat assessment

• Russian deep-strike activity remains broad rather than concentrated. The live alerting shows continued jet-UAV and missile penetration attempts toward Kyiv, Poltava, Dnipropetrovsk, Odesa and adjacent oblasts, assessed as continued pressure on Ukrainian air defence and rear infrastructure (MEDIUM).
• Russian strike claims continue to target Ukraine’s drone-industrial, data and logistics base. The «Архангел Спецназа» package, even if unverified, is consistent with the carried-forward counter-UAV-production and counter-logistics line of effort; no new Ukrainian official BDA corroborates effects (LOW-MEDIUM for intent, LOW for effects).
• Russian tactical aviation and UMPK/FAB employment continues on the Kharkiv border. The claimed Serdobino strike near Vovchansk indicates continued Russian attempts to disrupt Ukrainian reinforcement into the Malaya Volchya area, though Russian claims of encirclement remain unconfirmed (LOW-MEDIUM).
• Russian internal reporting exposes likely falsified liberation claims. The Северный канал post on Myropillia describes a reported “liberated” town where Russian troops were ordered into a lethal position, and criticises the 41st Motor Rifle Regiment commander. This is consistent with continued Russian information distortion about control of settlements and likely indicates local Russian tactical difficulties around Myropillia–Zapsillia (LOW-MEDIUM for the incident, MEDIUM for the pattern).
• Russian drone production may be benefiting from DPRK labour. Bloomberg headline reporting and subsequent relays claim up to 25,000 North Korean workers in Russian drone production, including at Alabuga; Rybar further discusses possible North Korean Geran-5 use against South Korean and Japanese targets. Assessed as a potential expansion of Russian UAV production capacity and a wider proliferation risk, but the workforce and transfer specifics remain unverified (MEDIUM for Bloomberg headline, LOW for detailed figures).
• Assessed likely Russian COA (next 6–12h): continued jet-UAV and possible missile penetrations toward Kyiv, Poltava, Dnipropetrovsk and Odesa; continued FAB/UMPK strikes on Kharkiv and Donetsk border-adjacent settlements; continued information operations around claimed captures such as Rozovka and Serdobino; and continued Russian internal criticism of falsified control reporting (MEDIUM).
• Assessed most dangerous Russian COA: a consolidated missile/UAV package against Kyiv energy, telecom and data infrastructure, coinciding with repeated Russian claims of strikes on Ukrainian drone production and data centres (MEDIUM for pattern; LOW for specific timing and targets).

Friendly activity (UAF)

• Air defence alerting and civil protection: Ukrainian Air Force issued multiple live jet-UAV and missile warnings across Kyiv, Poltava, Dnipropetrovsk and Odesa corridors; Kyiv alert was lifted at 13:59 UTC with only minor debris impact reported (13:22–14:01 UTC, Повітряні Сили ЗС України / КМВА, HIGH).
• Interception capability: President Zelensky announced a further successful test of Ukrainian interceptors against jet Shahed-type UAVs and said the capability will be scaled; this is an official Ukrainian claim and not independently verified (14:09 UTC, Zelenskiy / Official, HIGH as statement).
• Ground-force priorities: Zelensky cited “needed dynamics” in Donetsk Oblast, preparations to reinforce the Kupiansk direction, and destruction of occupier positions on the Oleksandrivka direction; he thanked the 82nd and 95th Separate Air Assault Brigades (14:09 UTC, Zelenskiy / Official, HIGH as official statement).
• Body exchange: Colonelcassad confirmed Russia received 23 bodies and transferred 252 Ukrainian dead, corroborating earlier reporting (13:32 UTC, Colonelcassad, MEDIUM-HIGH).
• Information operations: Ukrainian channels circulated Mavic drone footage of strikes on Russian infantry, framed as lethal outcomes; the visible clip shows a soldier walking but not the claimed death (13:56 UTC, WarArchive, MEDIUM for footage, LOW for claimed outcome).

Information environment / disinformation

• Russian strike-package amplification continues without new evidence. «Архангел Спецназа» re-posted the overnight strike collage, mixing named targets, uncaptioned map markers and unexplained thumbnails; the post acknowledges uncertainty over De Novo damage but retains a coercion narrative (13:15 UTC, АРХАНГЕЛ СПЕЦНАЗА, LOW).
• Kyivstar repeat-strike claim is unsupported visually. The post alleges a repeat strike on a Kyivstar office/building but the graphic only repeats a Ukrainian-language attack message; no damage photo, location, date or outlet is provided (13:19 UTC, Операция Z, LOW).
• Russian information operation on occupied-territory passportization. Colonelcassad posted queue photos to mock “queues under gunpoint” and assert spring 2014 Russian passport issuance; the images show crowds but not passports, coercion or passport-processing facilities, and one image carries a Reuters watermark (13:41 UTC, Colonelcassad, LOW).
• Russian DPRK/Geran narrative. Rybar’s Geran-5 target map for South Korea and Japan is a self-produced infographic, not evidence; it normalises Russian drone proliferation and frames civilian economic infrastructure as legitimate targets (13:20–13:31 UTC, Рыбарь, LOW).
• Ukrainian and Russian duelling claims over Chervona Krynytsia. Russian channel Воин DV accused Ukraine’s 92nd Separate Assault Brigade of using AI to fabricate a flag-raising; the claim is unproven, and the juxtaposed strike footage does not confirm the AI allegation (14:01 UTC, Воин DV, LOW-MEDIUM for the information operation; LOW for the AI claim).
• Off-topic pro-Russian items observed: Kotsnews alleged defective US Marine cold-weather boots at Cold Response in Norway, citing unverified 538-of-4,423 defect figures and an illustrative studio-like photo (13:19 UTC, Kotsnews, LOW); Операция Z relayed a WSJ screenshot on a US House bill targeting importers of Russian oil and gas while adding unverified “hell sanctions” details, 100%/500% tariff claims and named Russian banks/officials (13:49 UTC, Операция Z, MEDIUM for the WSJ headline, LOW for the added specifics). These are tracked as narrative circulation, not confirmed intelligence.
• Domestic/economic items observed: NBU currency rates for 18 September, PUMB advertising, Kyiv Digital refunds, and a Kharkiv powerlifting coach award were not military intelligence; they are noted only as information-environment noise (13:22–13:53 UTC, РБК-Україна / Олег Синєгубов, LOW operational relevance).

Outlook (next 6–12h)

• Weather, as of 14:30 UTC 17 September (Open-Meteo; HIGH for numeric values): Kharkiv/Vovchansk 18.7 °C, clear, cloud 5%, wind 1.4 m/s; Svatove 19.5 °C, mainly clear, cloud 39%, wind 1.2 m/s; Pokrovsk 19.4 °C, partly cloudy, cloud 53%, wind 1.3 m/s; Orikhiv 20.8 °C, partly cloudy, cloud 54%, wind 1.1 m/s; Kherson 22.1 °C, mainly clear, cloud 21%, wind 1.2 m/s; 0.0 mm precipitation at all points. Daily forecast: fog at Kharkiv/Vovchansk (5.0/20.7 °C), Svatove (8.0/20.8 °C) and Pokrovsk (9.1/20.5 °C); overcast at Orikhiv (9.8/21.6 °C); partly cloudy at Kherson (11.6/22.8 °C). Fog will degrade optical/UAV observation on the Kharkiv, Svatove and Pokrovsk axes; Orikhiv remains broadly permissive for UAV/FPV employment.
• Air activity: watch whether the Zghurivka, Myronivka, Brovary/Kyiv, Vasylkiv/Fastiv, Irpin/Bucha, Pavlohrad, Pyatykhatky and Krasnosilka/Odesa tracks produce impacts or intercepts; expect follow-on Ukrainian Air Force and regional administration reporting. HIGH.
• Kyiv: watch for Kyiv City Military Administration/DSNS statements on any additional debris or damage beyond the Sviatoshynskyi educational institution, and for any Russian claims of successful strikes on Kyivstar or other infrastructure. MEDIUM-HIGH.
• Ukrainian interceptor scaling: watch for additional official statements, imagery or deployment indicators for the new jet-Shahed interceptor. MEDIUM.
• Ground claims: watch for geolocated confirmation or refutation of Russian claims around Serdobino (Kharkiv Oblast) and Rozovka (Zaporizhzhia Oblast), and for further Russian internal reporting on Myropillia–Zapsillia. MEDIUM-HIGH for Myropillia discrepancy; MEDIUM for Serdobino/Rozovka.
• DPRK labour/drone production: watch for full Bloomberg article, US/ROK/Japanese official statements, and any UN or national sanctions reporting on Alabuga and Geran-5 transfers. MEDIUM.
• Northern flank: watch for Latvian/German statements and any further Baltic airspace drone incidents around the 3 October Saeima elections. MEDIUM.
• Carried-forward watch items: overnight strike-tally reconciliation with the Ukrainian General Staff; Mayaky/Dniester bridge BDA; Zaporizhstal/«Iskra» verification; the 252/23 exchange confirmation; and Russian claims around Malaya Volchya. HIGH for monitoring.

Intelligence gaps & collection requirements

• Live air track verification (new, priority): geolocate reported jet-UAV and missile tracks over Kyiv, Poltava, Dnipropetrovsk and Odesa Oblasts; obtain Ukrainian Air Force summaries and regional administration impact statements; identify whether any impacts occurred. HIGH.
• Kyiv debris incident (new): confirm exact location within Sviatoshynskyi district, Kyiv, educational institution affected, debris type and any follow-on damage or casualties; cross-check KMVA, DSNS and police reporting. HIGH.
• Serdobino FAB strike (new): geolocate the strike video, confirm whether the location is Serdobino, Vovchansk district, Kharkiv Oblast, and assess whether UAF personnel were present; compare with Ukrainian General Staff reporting. MEDIUM-HIGH.
• Rozovka control claim (updated): obtain geolocated evidence of Russian control, verify 5th Separate Tank Brigade/36th CAA presence, and cross-check claimed Ukrainian losses, especially 17 UGVs and 30+ Baba Yaga hexacopters. MEDIUM.
• Myropillia / 41st Motor Rifle Regiment incident (new): verify the reported order, casualties and commander’s identity; geolocate Myropillia and Zapsillia; compare Russian milblogger claims with Ukrainian reporting and line-of-contact data. MEDIUM-HIGH.
• R-18 drone engagement (new): verify the destroyed UAV type, unit attribution to 1st Motorized Rifle Battalion/1st Motorized Rifle Regiment RVSN, and whether RVSN ground units are operating on the Velykoburluk direction. MEDIUM.
• DPRK drone labour and Geran-5 claims (new): retrieve the full Bloomberg article, verify the 25,000-worker figure and Alabuga connection, and seek US/ROK/Japanese official assessments and UN Panel of Experts reporting. MEDIUM.
• Kyivstar repeat-strike claim (new): identify the original Ukrainian report, determine whether the incident was kinetic or cyber, geolocate any affected office/building, and check Kyivstar outage and official statements. MEDIUM.
• Chervona Krynytsia AI claim (new): obtain the original Ukrainian flag-raising footage and the alleged AI version; geolocate the dirt road and verify the 92nd Separate Assault Brigade’s media releases. MEDIUM.
• Body exchange (updated): confirm identities, nationality composition and the location of the 252-to-23 exchange; cross-check Ukrainian Coordination HQ, Russian sources and ICRC involvement. MEDIUM.
• Carried-forward without new data this cycle: Mayaky/Dniester bridge BDA; the «Архангел Спецназа» target list including De Novo, «Pegas-Arms», Brovary, Mashivka, Zaporizhstal/«Iskra» and Artsyz; the Horlivka civilian casualty claim; the Merz political narrative; and the Turkish ICC complaint. LOW-MEDIUM for most; MEDIUM for aggregates.