A Ukrainian counteroffensive was underway near the Russian-held town of Izium, but its military said Russian forces were advancing elsewhere in the key Donbas region.
British military intelligence said Russia's offensive in the Donbas has lost momentum and fell significantly behind schedule with a dramatic acceleration unlikely over the next 30 days.
Russia rejected Ukraine's claim to have set a modern navy logistics ship in the Black Sea, showing photos of what it said was the Vsevolod Bobrov with no signs of damage.
Refugees from bombed-out Mariupol spoke of devastation as they reached Ukrainian-controlled Zaporizhzhia in a large convoy of cars and vans after waiting days for Russian troops to leave.
Early on Sunday, the regional governor of Lviv said four missile strikes hit military infrastructure in the Yavoriv area of western Ukraine, near the Polish border.
Russia's defence ministry said its forces had hit Ukrainian command posts, ammunition depots and other military equipment in several regions, including the Donbas, killing at least 100 Ukrainian nationalists. Russian neighbour Finland will apply for NATO membership in a major policy shift prompted by Russia's invasion of Ukraine.
Ukrainian Foreign Minister Dmytro Kuleba met with U.S. Secretary of State Antony Blinken in Berlin on Sunday and said more weapons and other aid was on the way to Ukraine G 7 foreign ministers pledged to strengthen Russia's economic and political isolation, work to alleviate global food shortages stemming from the war.
Russia's ambassador to the United States, Anatoly Antonov, said that the country's diplomats in Washington were threatened with violence.
Sweden's ruling Social Democrats were poised to join Nato, paving the way for an application soon after and abandoning decades of military non-alignment.
Today we had a victory, but soon we will have a victory in Ukraine-Russian war, Tetyana, a military medic, said in a Kyiv basement after Ukraine's Kalush Orchestra won the popular song contest.