Volodymyr Zelenskiy said on Saturday his troops had strengthened positions and expanded territory in Russia's Kursk region nearly two weeks into their incursion.
Ukraine says it has seized more than 80 settlements over 1,150 square km (444 square miles) in Kursk since Aug. 6 in the biggest invasion of Russia since World War Two.
Zelenskiy said his army chief Oleksander Syrskyi had reported that Ukrainian troops continued their advance and also took more Russian servicemen as prisoners.
«Thank you to all the soldiers and commanders who are taking Russian military prisoners and bringing the release of our soldiers and civilians held by Russia closer,» Zelenskiy said in a statement on the Telegram messaging app.
«General Syrskyi also reported on strengthening our forces' positions in the Kursk region and expanding the stabilised territory.»
The Ukrainian military said in its daily report that troops were successfully advancing further in Kursk, without offering more details. It had previously reported 35 km of advances.
Reuters could not independently verify the battlefield developments.
Russia has called the incursion a major provocation and vowed to retaliate with a «worthy response,» more than 2-1/2 years since it launched a full-scale invasion of Ukraine.
Moscow says Ukraine has been using Western arms, including probably U.S.-made HIMARS rockets to destroy a bridge and kill volunteers trying to evacuate civilians.
Zelenskiy also said that Ukrainian troops had repelled dozens of Russian attacks near