Ukraine warned on Friday that peace talks with Moscow were in danger of collapse and said Russia was pounding areas in the east as US lawmakers vowed to swiftly approve a massive new weapons package for Kyiv.
Russian forces have turned their focus toward Ukraine's east and south after failing to capture the capital in a nine-week assault that has turned cities to rubble, killed thousands and forced 5 million Ukrainians to flee abroad.
Moscow captured the city of Kherson in Ukraine's south and its forces have mostly occupied the eastern port city of Mariupol, where United Nations efforts are under way to evacuate civilians and fighters holed up in a large steel plant.
Ukraine and Russia have not held face-to-face peace talks since March 29, and the atmosphere has soured over Ukrainian allegations that Russian troops carried out atrocities as they withdrew from areas near Kyiv. Moscow has denied the claims. The two sides have since held talks by video link.