Theresa May disappointed at Donald Trump's withdrawal from Paris agreement
In a phone call, the US President called Mrs May to “discuss his decision to pull out of the Paris agreement”, Downing Street said in a statement.
The Republican said the Paris agreement "front loads costs on American people", "disadvantages the US" to benefit other countries and causes a "vastly diminished economic reduction".
He added: "In order to fulfill my solemn duty to protect America… the United States will withdraw from the Paris climate accord.”
Theresa May's political career in pictures Tue, April 18, 2017
Prime Minister Theresa May has promised to 'build a greater Britain'
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Saudi Arabia's King Salman bin Abdulaziz al-Saud (R) meeting with British Prime Minister Theresa May in the capital Riyadh, Saudi Arabia, 05 April 2017. May is visiting Saudi Arabia as part of her Middle East trip to boost diplomatic ties in the region
Instead of hand-holding, I'll work for a sustainable future for our planet
But Number 10 said Mrs May told Trump, “the Paris Agreement provides the right global framework for protecting the prosperity and security of future generations, while keeping energy affordable and secure for our citizens and businesses”.
Although the two leaders could not agree on the climate deal, Mrs May and Mr Trump’s special relationship remains in tact as they agreed on the importance of "continued co-operation on wider energy issues".
But Mrs May has found her self under fire among her national political rivals for not joining her French, German and Italian counterparts in signing a joint declaration to decline Mr Trump's demands to negotiate a new deal.
Scottish First Minister Nicola Sturgeon, who described Mr Trump's withdrawal as "profoundly regrettable", said it was an "appalling abdication of leadership by the PM”.
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Labour leader Jeremy Corbyn mocked the famous photos of Mrs May during her January visit to Mr Trump in the White House, as he said: "Pulling out of the Paris climate deal is reckless and regressive. Instead of hand-holding, I'll work for a sustainable future for our planet."
French president Macron mocked Donald Trump's slogan and said he will make the planet "great again"
Nicola Sturgeon blasted May's leadership as appalling
Former Labour leader Ed Miliband joined in the attacks and asked: "Theresa May, why are you missing from this statement? You can't stand up for Britain because you won't stand up to Trump. Weak leadership."
Urging Mrs May to use any influence she may have over the US President to make him change his mind, Liberal Democrat leader Tim Farron mockingly said: "You have gone to Washington to hold Donald Trump's hand, now is the time to hold his feet to the fire.
"We need to make him see sense on climate change. Prime Minister: if your special relationship with Donald Trump means anything, prove it."
World leaders gather at G7 summit 2017 Fri, May 26, 2017
Donald Trump will face Theresa May and world leaders at the G7 summit in Sicily
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G7 Summit in Taormina
Shadow foreign secretary Emily Thornberry said "the opprobrium of the world" should ring in Mr Trump's ears.
She added: "Even earlier today, while Trump's decision hung in the balance and leaders around the world were pressuring him to do the right thing, all Theresa May could say was ‘It's up to the president to decide’.
Ukip's Paul Nuttall inadvertently said Trump can make his own decisions because he is the President
"That is a total dereliction of her duty, both to our country and our planet, and it is not just her lack of backbone that has been exposed during this campaign, but her hopelessness at diplomacy and negotiation."
In a video message from the Elysee Palace, Mr Macron turned Mr Trump's slogan against him, he said France would continue the fight to "Make our planet great again".
The French president also invited American climate change scientists, engineers and entrepreneurs to work in France and continue their work.