Ukrainian forces have seized even more territory from Russia as they continue their counter-offensive, the country's president has said.
Volodymyr Zelensky said troops have now retaken more than 6,000 sq km (2,317 sq miles) from Russian control in September, in the east and the south.
Russia has admitted losing key cities in the north-eastern Kharkiv region, in what is seen by some military experts as a potential breakthrough in the war.
Moscow describes its troop withdrawal from the region in recent days as a "regrouping" with the aim of focusing on the Luhansk and Donetsk regions in Ukraine's east.
That claim has been ridiculed even in Russia, with many social media users there describing the stated pull-out as "shameful".
Speaking later on Monday, US Secretary of State Antony Blinken said Ukrainian forces had made "significant progress" in their counter-offensive, but added that it was too early to predict the outcome.