British Prime Minister Boris Johnson told Ukraine's President Volodymyr Zelenskiy he is committed to further tightening sanctions to impose maximum economic cost on Russia, a Downing Street spokesperson said.
The spokesperson said Johnson discussed the situation in Ukraine on a call with Zelenskiy on Wednesday evening.
Zelenskiy tweeted that the two leaders had also discussed "further support for Ukraine in fighting the aggressor, including defense assistance". He did not give details.
