U.K. Prime Minister Boris Johnson will be speaking with President Biden on Monday, with Johnson having said, “I’m going to be doing everything I can to help the diplomatic process. I’ll be talking to various leaders, including Joe Biden, very soon.” This news follows continued concern in both the U.S. and U.K. that a Russian invasion of Ukraine is looming.

According the U.K. foreign secretary, it is “very clear there could be an imminent invasion of Ukraine” as tensions between Ukraine and Russia increased over the weekend.