Elsewhere, the president of Finland warned that a ceasefire in Ukraine is unlikely before the spring and urged European allies to keep up support.

Putin has not indicated a willingness to negotiate an end to the war that doesn't include giving Russia gains it has not acquired militarily.

Russia said on Sunday that its forces had moved forward sharply in Ukraine's south-eastern Zaporizhzhia region, taking two settlements as part of a major push aimed at taking control of the entire Zaporizhzhia region.

A Ukrainian commander says the Russian army has overrun three settlements in Ukraine's southern Zaporizhzhia region.

The scene looks almost post-apocalyptic. A convoy of Russian soldiers emerging from thick fog and moving towards the eastern Ukrainian city of Pokrovsk. Some of the troops are riding motorcycles and mopeds;

Moscow’s attacks on gas supplies, the main source of warmth for most Ukrainian households, could plunge millions into the cold.

KYIV, Ukraine (AP) — Ukraine is working to resume prisoner exchanges with Russia that could bring home 1,200 Ukrainian prisoners, President Volodymyr Zelenskyy said Sunday, a day after his national security chief announced progress in negotiations.

Russia launched a heavy drone and missile attack on Ukraine early on Friday, killing six people in Kyiv and two more in the south in strikes on energy facilities, apartment buildings and infrastructure,