The US vice-president, Kamala Harris, who attended the summit in place of the US president, Joe Biden, announced more than $1.5bn (£1.2bn) in aid for Ukraine.

The $1.5bn includes $500m (£395m) in new funding for energy assistance and the redirecting of $324m (£256m) in previously announced funds toward emergency energy infrastructure repair and other needs in Ukraine, the vice-president’s office said.

She also announced more than $379m (£300m) in humanitarian assistance from the state department and the US agency for international development to help refugees and other people affected by the war.