President Donald Trump will announce shortly that United States is withdrawing from the 2015 Paris climate agreement.
The move will follow United Nations procedures and take up to four years, U.S said.
Mr. Trump said during last year’s presidential election campaign that he would take the step to help his country’s oil and coal industries.
Opponents said withdrawing from the accord is an abdication of U.S leadership on a key global challenge, the BBC reports.
Earlier, UN Secretary General, Antonio Guterres, again appealed to Mr. Trump not to break the commitment – but said the battle against climate change would continue regardless of the U.S stance.
Mr. Guterres told the BBC: “It is obviously a very important decision as the United States is the biggest economy in the world.
“But independently of the decision of the American government, it’s important that all other governments stay the course.
“The Paris agreement is essential for our collective future and it’s also important that American society – like all other societies, the business community – mobilise themselves in order to preserve the Paris agreement as a central piece to guarantee the future of our children and grandchildren.”