PRIME Minister Theresa May yesterday condemned Donald Trump's controversial decision to recognise Jerusalem as Israel's capital.
She said it was "unhelpful for peace prospects in the Middle East".
And she added that she would tell the American president so in a showdown call.
The disagreement was their second in recent days, following on from their diplomatic spat over Trump's retweeting of videos posted by far-right group Britain First.
Trump faced world condemnation yesterday over his Jerusalem declaration and his decision to relocate the American embassy from Tel Aviv to the holy city.
As angry Palestinian demonstrations broke out in the West Bank amid calls for a new intifada, several MPs tore into him.
They accused the US president of abandoning his role as a peace broker . . . and increased pressure on the government to recognise a Palestinian state.
Foreign Secretary Boris Johnson demanded that Trump launch a new initiative to resolve the Israeli-Palestinian conflict.
He described Trump's move as "unhelpful".
"It is a card that should not be played until it is an incentive that can be used to get the peace process moving," Johnson added.
Labour Party leader Jeremy Corbyn tweeted that Trump's recognition was a "reckless threat to peace". And Shadow Foreign Secretary Emily Thornberry called it "damaging".
Labour Friends of Israel "urged" Trump to facilitate a return to "direct and meaningful" negotiations between Israel and the Palestinian Authority and criticised him for his "unilateral international move which does not advance the peace process".
But support for Trump came from Zionist Federation chairman Paul Charney, who said the announcement was "long overdue" and should serve as a "platform for a future peace".
Former Chief Rabbi Lord Sacks said that the recognition is an "essential element" in any lasting peace in the region.