But his announcement won't torpedo the 2015 accord, which was signed by almost 200 nations and united the globe in fighting global warming. "We are getting out and we will start to renegotiate", Trump said at the Rose Garden of the White House.
"On behalf of the people of New York City, and alongside mayors across the country, I am committing to honour the goals of the Paris agreement with an executive order in the coming days, so our city can remain a home for generations to come", Mr de Blasio said.
Australia's Environment and Energy Minister Josh Frydenberg said Canberra remained on track to meet its Paris targets and United States withdrawal would not derail the deal. The government has also developed energy efficiency programs that will ensure that the majority of India's infrastructure that will exist by 2030 can be built in a more sustainable manner. Paris accord is very unfair at the highest level to the United States.
"Think of it: India can double their coal production".
US Ambassador to the UN, Nikki Haley said by deciding to withdraw from the climate agreement, Trump acted in America's best interest, "moving away from a flawed agreement that placed too heavy a burden on American jobs, and opening the door to a new agreement that reaches the right balance". Trump, in announcing America would withdraw in four years, clearly did not agree.
Democrats would join efforts with states, cities and the private sector to make good on initiatives to mitigate the threat of climate change, she added, "regardless of the reckless and short-sighted actions that the White House takes". And we will keep challenging ourselves to do even more. This a global challenge.
On Thursday, President Donald Trump walked backward - and he took the nation with him.
"The US decision to leave Paris in no way brings an end to this unstoppable effort".
Trump's withdrawal from the accord was not just a blow to one of Obama's signature achievements, but to an issue routinely dubbed by the Obama administration as the greatest threat to U.S. national security and future generations across the globe. "It will save millions of lives and slash the huge healthcare cost of pollution".
"The rest of the world will question whether the United States can be trusted", said Gina McCarthy, who served as Environmental Protection Agency administrator under President Barack Obama.
"Ultimately, this is an investment in our own survival that no-one can afford to abandon", he added.
Trump's decision is likely to play well with the Republican base, with the more immediate damage on the diplomatic front.
Making the moment all the more discouraging, Trump's announcement came wrapped in a cynical and rambling speech, one that cited some already debunked statistics about the potential impacts of the Paris agreement on America's economy.
The Pacific Islands region is among the most vulnerable in the world affected by climate change with rising sea levels and frequent stronger natural disasters. The Paris Agreement was born out of effective multilateralism and a desire to find a cooperative solution to a global problem. Thirty countries earlier this month called on all countries to implement their commitments under the agreement. Today, we're just the former - on a backward course.
"Manufacturers support the spirit of the Paris Agreement and the effort to address climate change through a fair worldwide agreement".
Trump said on Thursday the United States will withdraw from the Paris climate deal, a move that fulfilled a major campaign pledge but drew condemnation from global leaders and executives.
Climate change is real and we all share a responsibility to fight it.
In a TV address broadcast both in French and English, Macron said he respected Trump's decision, "but I do think it is an actual mistake both for the USA and for our planet".
"Withdrawal from the climate agreement is a betrayal of scientific fact, economic opportunity, and moral leadership".