Sir Keir Starmer is set to host more talks on a peacekeeping force for Ukraine after warning Vladimir Putin not to play games with a proposed ceasefire.

The Prime Minister will today hold a video call with as many as 25 potential members of the “coalition of the willing”, nations that could take part in any peacekeeping operation.

After speaking to French president Emmanuel Macron and Norwegian prime minister Jonas Gahr Store on Friday afternoon, Sir Keir warned: “We can’t allow President Putin to play games with President Trump’s deal.

“The Kremlin’s complete disregard for President Trump’s ceasefire proposal only serves to demonstrate that Putin is not serious about peace.”

Saturday’s call comes as Russia continues to resist proposals for an unconditional 30-day ceasefire put forward by Ukraine and the US earlier in the week.