Russia said on Monday its forces had made important gains in eastern Ukraine while continuing to fend off a new Ukrainian offensive inside the Kursk region of western Russia, where a second day of fierce fighting was under way.

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Ukraine launched a fresh operation in Russia's southern Kursk region, Moscow said on Sunday, after Ukrainian officials and military bloggers reported new attacks from Kyiv in a region where Moscow is eager to reassert its grip.

Russian military commentators say they are ‘worried’ about the multipronged Ukrainian attack in the border region of Kursk

Ukraine has largely been driven out of Kurakhove, a battered but strategic town in the Donbas, Russia said. Kyiv’s forces were pressing a renewed offensive in southern Russia.

It comes after Ukraine said it was behind a drone strike on a Russian oil base in the region. Submit your questions for our correspondents in the box below.

Russian forces continue to make costly but consistent gains in the Donetsk region in eastern Ukraine. They are steadily grinding down a pocket of resistance around the town of Kurakhove and are also fighting to envelop the larger nearby city of Pokrovsk, Ukrainian soldiers and officials said.

Ukraine's fresh offensive in Kursk comes nearly six months after Kyiv first sent troops into the western Russian region.

As Europe braces for President Donald Trump’s return to the White House, questions loom over its impact on the war in Ukraine and NATO’s future. Nearly

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Ukraine's president told podcaster Lex Fridman that 3,800 North Koreans had been killed or wounded fighting alongside Russia but many more could come.