Keir Starmer has warned that Vladimir Putin could invade Ukraine again if the US does not provide security guarantees for Europe. The Prime Minister is en route to Washington for a key summit with Donald Trump at the White House on Thursday,

The prime minister wants to keep everyone happy. He has been loath to criticize Trump, has warmed up Britain’s post-Brexit partnership with the European Union, avowedly backed Kyiv and thawed ties with China. At a time of geopolitical upheaval, he is attempting to squeeze Britain into an impossibly tight Venn diagram.

If there is a ceasefire without a backstop, it will simply give him the opportunity to wait and to come again,’ Keir Starmer warned on the flight to Washington, D.C.