Russia attacked positions in eastern Ukraine as it tries to encircle Ukrainian forces in the Donbas and fend off a counteroffensive around the city of Izium.
NATO Secretary-General Jens Stoltenberg said Russia's offensive in Donbas had stalled and Ukraine could win the war, an outcome few military analysts predicted at the outset of the conflict.
"Russia's war in Ukraine is not going as Moscow had planned," Stoltenberg told reporters on Sunday.
In a strategic blow for Russia, which has long opposed NATO expansion, Finland on Sunday confirmed it would apply to join the Atlantic military alliance.
Sweden's ruling Social Democrats also on Sunday backed
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