European Climate Commissioner Miguel Arias Canete told reporters in Brussels he deeply regretted the USA pullout from the pact to fight the dangers of global warming, which was signed by more than 190 countries, and said it could not be renegotiated as Trump has suggested [B5N1G8011].
The EU's climate change chief, Miguel Arias Cañete, said that Thursday was a "sad day for the global community, as a key partner turns its back on the fight against climate change".
Russian Federation is a signatory of the Paris Agreement, and the Kremlin said this week it would remain in the climate accord.
The New York Times has gone in hard on Trump's move, publishing streams of articles in response the announcement.
"On the climate there is no plan B because there is no planet B", he said.
His tweet has been shared almost 200,000 times. "I do respect this decision but I do think it is an actual mistake both for the USA and for our planet..."
Although Mr Trump has pulled the U.S. out of the deal, he insisted that he "will work to ensure that America remains the world's leader on environmental issues, but under a framework that is fair and where the burdens and responsibilities are equally shared among the many nations all around the world".
Theresa May has told the President of her "disappointment", said a Downing Street statement. Speaking to reporters on Thursday before Trump's decision was announced, a spokesman for President Vladimir Putin said Russian Federation "thinks highly" of the accords and sees no alternative to it. Spokesman Dmitry Peskov added that its implementation will not be as effective "without the key signatories".
"For example", said the US President, "under the agreement, China will be able to increase these emissions by a staggering number of years - 13".
But Syria was unable to send an official to sign the accord because of the civil war and Nicaragua chose not to sign because it felt the agreement did not go far enough.
A global deal, agreed under the United Nations in the French capital in December 2015, which will see action by all countries to curb rising temperatures.
Putin said, "I wouldn't start to condemn President Trump" over the decision, adding that perhaps Trump thought agreements by former President Barack Obama "hadn't been totally thought through". "And it makes a statement to the world: there is no reverse gear to the energy transition, there is no backsliding on the Paris agreement", Juncker said.
President Hilda Heine expressed disappointment and confusion at the United States decision and said it would have grave implications.
But he has come under pressure from advisers, businesses and politicians of both parties to keep the USA in the agreement.
In Paris, the Obama administration had promised to slash emissions to at least 26% below 2005 levels within 10 years. Chinese climate negotiators have frequently criticized the United States and other industrialized nations for failing to compensate for their historical contributions to greenhouse gas emissions while expecting China and India to do more. Only China exceeds it.