Ukraine received a consignment of Stinger anti-aircraft missile systems and ammunition by plane from Lithuania on Sunday, the defense ministry in Kyiv said.

Earlier on Sunday, two other planes delivered about 180 tonnes of ammunition from the United States, Defense Minister Oleksii Reznikov said. Ukraine had so far received almost 1,500 tonnes of ammunition delivered on 17 flights, he said on Twitter.

Meanwhile, a British government spokesperson said that Britain is working on a to-be-announced package of military support and economic aid for Ukraine and Prime Minister Boris Johnson will make a trip to Europe later this week to build support to end the standoff with Russia. 

(With input from Reuters)