KYIV – Ukraine said on Aug 12 that its biggest cross-border assault of the war had captured 1,000 sq km of Russia’s Kursk region and that Russian President Vladimir Putin would have to be forced into making peace.

       With Russia still struggling to repel the surprise assault a week after it began, Ukraine’s top commander Colonel General Oleksandr Syrskyi briefed President Volodymyr Zelensky by video link and said the advance into Russian territory was ongoing.

       “We continue to conduct an offensive operation in the Kursk region. Currently, we control about 1,000 sq km of the territory of the Russian Federation,” he said in a video published on Mr Zelensky’s Telegram account.

       He provided scant detail, continuing Kyiv’s strategy of silence that contrasts starkly with the 2023 counteroffensive that was known for months in advance and which foundered on Russian defensive lines.

       Col Gen Syrskyi spoke a few hours after Mr Alexei Smirnov, Russia’s acting regional governor of Kursk, estimated that Kyiv’s forces had taken control of 28 settlements in an incursion that was about 12km deep and 40km wide.

       Though less than half of Col Gen Syrkyi’s estimate of the Ukrainian gains, Mr Smirnov’s remarks were a striking public admission of a major Russian setback, more than 29 months since Russia launched a full-scale invasion of its smaller neighbour.

       Reuters was unable to verify the claims by either side.

       Mr Putin has described the cross-border attack as a “major provocation” and said it was aimed at improving Kyiv’s negotiating position.

       Mr Zelensky told Ukrainians in his nightly address that the operation was a matter of Ukrainian security and the Kursk region had been used by Russia to launch many strikes against Ukraine.

       He said Ukraine’s north-eastern Sumy region, which lies across the border from Kursk region, had been struck by Russia almost 2,100 times since June 1.

       “Russia must be forced to make peace if Putin wants to fight so badly,” Mr Zelensky said.

       The Ukrainian attack comes after months of slow but steady advances by Russian forces in the east that have forced Ukraine’s troops onto the back foot as they try to withstand Russia’s heavy use of gliding bombs and assault troops.

       Former Ukrainian defence minister Andriy Zagorodnyuk told Reuters the Kursk operation looked like it aimed to distract Russian forces and its leadership from the eastern fronts.

       “The apparent goal is to create a problem area for Russia, which will distract its forces and its leadership’s attention and resources from where they’re trying to succeed right now,” he said by phone.

       Visiting Kyiv on Aug 12, US Republican Senator Lindsey Graham urged the US presidential administration to provide Ukraine with the weapons it needs.

       “What do I think about Kursk? Bold, brilliant, beautiful. Keep it up,” he told reporters.

       Mr Putin has said Ukraine had received help from its “Western masters” and vowed that “the enemy will certainly receive a worthy response”. REUTERS