"And the US, the UK, Europe will need to work very closely together to ensure that we can make sure we can get that lasting peace for Ukraine, that it would have the security guarantees that we need.
The French president said he had worked with Sir Keir on plans to send a peacekeeping force to Ukraine to safeguard a lasting deal - as long as Mr Trump was also prepared to offer security guarantees.
The transatlantic alliance has been put under severe strain by Mr Trump's approach to ending the war, with the US president opening talks with Russia's Vladimir Putin, branding Ukraine's Volodymyr Zelensky a "dictator" and suggesting Kyiv's forces were to blame for the conflict.
He told Fox News: "We worked very hard together with the UK prime minister to have a French-UK proposal to say we are ready to send troops, not to go to the front line, not to go in confrontation, but to be in some locations, being defined by the treaty, as a presence to maintain this peace and our collective credibility with the US backup and the US backstop.".
The United States will have to work closely with the UK and Europe to deliver a lasting peace in Ukraine, the Home Secretary said ahead of Sir Keir's trip to Washington.
