Emil Kastehelmi Profile picture
Dec 1, 2024 10 tweets 3 min read Read on X
This fall has been grim for Ukraine. According to our assessment, between 1 September and 30 November, the Russians captured over 1600 km2 in Ukraine, and retook roughly 500 km2 in Kursk. The rate of advance accelerated every month, despite the Russians suffering heavy losses. 1/ Image
Already at the end of the summer, the situation seemed to be developing in a worrying direction. Especially in August, the Russian gains were relatively large, and it did not seem like the Ukrainian offensive in Kursk would significantly slow down the Russians. 2/
During the fall, while making progress in Ukraine, Russia also conducted several counterattacks in Kursk. Ukraine lost the western flank of the salient, while also losing positions in the east. Between September and November, Ukraine didn’t advance significantly in the area. 3/ Image
Main focus of the Russian offensive this fall has been the area of Pokrovsk and Kurakhove. In November, after the loss of Vuhledar, Russians also advanced quickly to Velyka Novosilka. Currently, most of the changes on the frontline are happening on a 140 km section. 4/
Russians are pressuring elsewhere too, but have not gained much in the big picture. Ukrainians held the Toretsk-Chasiv Yar-Siversk direction well, denying Russians of any greater progress in northern Donetsk. The front in Zaporizhzhia didn’t see much change during this fall. 5/ Image
In Kupiansk, the Russians managed to advance to the Oskil river, cutting the Ukrainian presence there in half. However, this can be considered a secondary front without very significant opportunities for the Russians, regardless of whether they are on the river or not. 6/ Image
What can we expect from the rest of the year? Based on the current trends, the Russians can likely continue their offensive in the Pokrovsk-Velyka Novosilka direction. It can be expected that additional 500-700 km2 of Ukrainian land will be occupied. 7/
Russia will likely try to continue advancing in Kursk too, but concentrating very heavy forces there wouldn’t be the best usage of their troops. However, the same applies to Ukraine. Reserves would be needed elsewhere, as the eastern front has had constant setbacks for months. 8/
I’ve been posting a bit less recently, as I’ve been very busy with work. Various articles, reports, lectures, presentations, interviews, TV appearances, a podcast series and my upcoming non-fiction book military history have taken most of my time. 9/
However, we at @Black_BirdGroup still follow the situation closely. You can also find me and us from the other place with bluer skies, if that’s your preferred platform nowadays.10/10

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More from @emilkastehelmi

Jan 2
2025 can reasonably be seen as an operational and strategic failure for Russia, but all scenarios remain on the table. Any optimism is premature, as Ukraine also faces serious challenges.

In this thread: An assessment of the past year and its broader implications. 1/ Image
First, some numbers. Russia took under 4,600 km² of Ukrainian territory in 2025, compared to roughly 3,500 km² in 2024.

Despite the increase, focusing only on square kilometers provides poor tools for analyzing current dynamics and the war’s future. 2/ Image
Russia failed to achieve operational goals. The front advanced relatively evenly despite local salients. Most captured territory consisted of fields, villages and small towns.

Even when brief momentum appeared, Russian forces were unable to turn it into a larger breakthrough. 3/
Read 16 tweets
Nov 4, 2025
Ukraine may be repeating a costly mistake in Pokrovsk.

It’s a recurring pattern, seen for example in Vuhledar and Kursk – a reluctance to conduct a controlled, militarily justified withdrawal from a threatened salient when the situation no longer favors the defender. 1/ Image
The situation in Pokrovsk is difficult for the Ukrainians. Russians have consolidated positions in the southern parts of the city, and are advancing further north. Most of the city is a gray zone, where infantry groups fight without a clear frontline. 2/
The latest Ukrainian counterattacks have not turned the situation decisively in Ukraine's favor. They managed to recapture various positions in Rodynske and in the Dobropillia direction, but the threat of encirclement in Pokrovsk and Myrnohrad has not been removed. 3/
Read 14 tweets
Aug 15, 2025
According to Ukrainian 1st Corps (Azov), the situation east of Dobropillia has been stabilized and the Russians have been pushed out of six villages. They also reported that the combined Russian losses in the area are 385 men, 37 vehicles, 2 AFVs and 1 tank.

A few thoughts: 1/🧵 Image
It is evident that this operation was not merely a few infiltration groups slipping past Ukrainian lines only to be destroyed. While it may have begun as a lighter operation, Russian forces were prepared to exploit breakthroughs, successfully advancing into the Ukrainian rear. 2/
If the reported losses are accurate, it implies multiple Russian battalions were engaged in the battle, with many still fighting, as Russia has not lost all gained territory. The Russians are now likely trying to consolidate and defend the southern part of the corridor. 3/
Read 9 tweets
Aug 12, 2025
Russians have recently advanced deep in the area east of Dobropillia. The situation has concerning elements which can escalate it into a serious crisis, but at this stage we’re still not witnessing a disaster – and by definition, not even a breakthrough. I’ll explain. 1/ Image
The situation had been deteriorating for some time. The Russians had been attempting to advance in the Dobropillia direction earlier this month. A gray zone had formed in the area, as the Ukrainians struggled to maintain a firm defence against the infiltrating enemy. 2/
Russia has an advantage in expendable manpower – once it finds a weak spot, it can aggressively try to exploit it by pushing more infantry into the area. Small infiltration groups will try to advance as far as possible, which is enabled by the porous Ukrainian defences. 3/
Read 13 tweets
Jul 3, 2025
According to our data, the Russians did not accelerate their advance during June. The pace isn't slow, but most of the Russian gains last month were in less crucial areas.

It can be argued that Russia mostly wasted June without achieving significant success. 1/
The situation isn't great for Ukraine, but it could be worse.

The salient between Pokrovsk and Kostiantynivka is still an issue, but it didn't rapidly expand in June. The front in Sumy was also stabilized. The worst-case scenarios didn't materialize, at least not yet. 2/
A large part of the Russian gains were south of Pokrovsk, where they are pushing towards the administrative borders of Donetsk oblast. Entering Dnipropetrovsk oblast doesn't change the general situation much, even though there's a lot of Russian propaganda about it. 3/
Read 5 tweets
Jun 5, 2025
On June 1, Ukraine conducted a successful operation targeting Russian strategic bombers and other aircraft.

Our battle damage assessment can confirm the following losses: 12 destroyed and 3 damaged aircraft, of which 14 are strategic bombers and 1 is a transport aircraft. 1/ Image
From videos and satellite images, 23 distinct aircraft were identified in total as potentially targeted. The condition of 4 aircraft seen in videos remains unclear. Available evidence doesn’t allow for assessing potential damage or whether nearby drones even detonated. 2/ Image
The highest possible number for total losses is 19, if all aircraft in unknown condition are actually damaged. However, this can’t be confirmed at the moment.

In 4 cases, it appears the drones likely missed, did not explode or cause visible damage for other reasons. 3/
Read 17 tweets

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