British Prime Minister Boris Johnson and Ukraine’s President Volodymyr Zelenskyy expressed their determination to further tighten sanctions against Russia.

“The Prime Minister committed to further tighten these sanctions in order to impose the maximum economic cost on Russia”, - the UK Prime Minister’s Office said in a statement about a phone call between the leaders.

Johnson outlined the work the UK is doing to provide the military equipment Ukraine needs to defend itself and Zelenskyy thanked him for “the UK’s ongoing military support, alongside tough new sanctions to punish the Putin regime for its actions”, it said, referring to Vladimir Putin.

Both leaders also condemned “the horrifying attack on a maternity hospital in Mariupol and the failure by Russian forces to respect cease-fire agreements in humanitarian corridors”.

Johnson said “this was yet further evidence that Putin was acting with careless disregard for International Humanitarian Law”.