Ukraine appears to have resumed its offensive in Russia’s Kursk region, which has been partially controlled by Kyiv since it launched an incursion there last August.
It was not immediately clear how much Ukraine had advanced in the region, but pro-Kremlin military bloggers reported earlier that a powerful new offensive was underway.
Here’s a look at everything we know based on what military analysts and bloggers are saying:
What is happening in Kursk?
Russia said Sunday that Ukraine had intensified its offensive in Kursk, adding that Kyiv used a dozen armored vehicles and a demolition unit in the assault.
On Monday, Russia's Defense Ministry said its troops "continue to defeat Ukrainian army units on the territory of the Kursk region" and had prevented an attempted "breakthrough" near the village of Berdin about 15 kilometers northeast of the town of Sudzha, which Kyiv captured in August 2024.
The Ukrainian army has not commented on the operation, simply saying in its daily report that fighting was underway in the Kursk region without elaborating.
The U.S.-based Institute for the Study of War (ISW) said citing Russian military bloggers that Kyiv’s forces launched assaults in the Berdin-Novosotnitsky direction (northeast of Sudzha), in the direction of Leonidovo and near Pushkarnoye (east of Sudzha).
The Russian Defense Ministry said late Sunday that up to 340 Ukrainian military personnel had been killed in the past 24 hours.
Russian forces claimed to have destroyed a substantial amount of Ukrainian equipment, including four tanks, three infantry fighting vehicles, four armored personnel carriers, 12 combat armored vehicles, one mine-clearing vehicle, 20 vehicles and five mortars.
The ISW also said that Russian forces had advanced southeast of Sudzha and counterattacked against Ukraine southeast of Korenevo and north of Sudzha on Sunday.
According to the ISW, “Russian sources expressed concern about the Russian military's ability to react to Ukraine's ongoing combined arms efforts to integrate electronic warfare and long-range strike capabilities with ground operations.”
Pro-Kremlin military bloggers acknowledged the Russian army had come under pressure but said Moscow was fighting back.
Rybar, an influential pro-Russian military blog on Telegram, said late Sunday that "despite all the attacks, the Ukrainian Armed Forces were unable to make significant progress."
"Nothing happened overnight, the enemy is moving around in Sudzha, pulling reserves. We think there will be a second attempt soon. The situation at the front near Sverdlikovo and Lebedevka remains tense," the pro-war Telegram channel Starshe Eddy wrote on Monday morning.
"Active assaults have been recorded along the forest belts, where the Russian Armed Forces are actively using aviation, artillery and UAVs. Despite heavy losses, the enemy shows no intention of retreating and is bringing in new reserves, indicating their resilience and desire to continue fighting," Starshe Eddy continued. "However, our forces are showing resilience and returning fire, seriously countering the enemy's attempts to test the front."
Since the incursion, thousands have been evacuated from Kursk and are still displaced, while many others remain stranded in areas controlled by Kyiv.
Acting Kursk region Governor Alexander Khinshtein on Sunday urged residents to avoid returning to settlements in the so-called "gray zone" as it remained unsafe.
Where did things stand before the renewed offensive?
Kyiv seized dozens of villages in the Kursk region shortly after its incursion started on Aug. 6, 2024, marking the first time since World War II that foreign troops have occupied Russian territory.
Its advances stalled after Moscow rushed reinforcements to the area, including thousands of troops from its ally North Korea.
But it has held on to the town of Sudzha — the site of a key natural gas transit point on a pipeline bringing Russian gas to Europe via Ukraine — since early in the incursion.
As of November, Ukraine controlled 800 square kilometers of the Russian border region, down from previous claims it controlled almost 1,400 square kilometers, according to a Ukrainian army source to AFP.
Why now?
The assault comes at a critical juncture in the nearly three-year war, with both sides seeking to strengthen their negotiating hand ahead of U.S. President-elect Donald Trump's return to the White House on Jan. 20.
Ukrainian President Volodymyr Zelensky said last year the Kursk operation had boosted Kyiv's "exchange fund" — its negotiating position on swapping prisoners of war — and diverted tens of thousands of Russian troops away from the eastern front.
Yet the goals and the scope of Ukraine's apparent new offensive remain unclear.
"There have been rumors for a while that a AFU [Ukrainian] operation was likely. So folks should not be surprised by the news that a new AFU offensive appears to be underway in Kursk. Although the scope is unclear," Michael Kofman, a senior fellow in the Russia and Eurasia Program at the Carnegie Endowment for International Peace, wrote on X.
The ISW said Russian military bloggers expressed concern "that the renewed Ukrainian effort in the Kursk region may be a diversionary effort and claimed that it is too early to determine whether these operations in Kursk could be part of a future main effort."
AFP contributed reporting.
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