"In order to fulfil my solemn duty to protect America and its citizens, the United States will withdraw from the Paris climate accord", Mr Trump said, arguing the deal was harmful to USA manufacturing and was costing jobs.
On the other hand, the president's aides could say Trump accepts climate science, but that would annoy his radicalized base, and it would also create a responsibility to do something about the problem. Alternatively, the European Union "should enhance cooperation" in the field, and strengthen its alliances with other global powers, including Russia, China, and India, he said. The treaties allow companies to sue a government in an ad hoc arbitration if they feel their rights have been violated, such as by a change in the legal basis they made their investment on.
While Trump said the United States would be willing to rejoin the accord if it could obtain more favorable terms, the three European leaders said the agreement cannot be renegotiated, "since it is a vital instrument for our planet, societies and economics". "Investors have already envisaged the investment prospects and the business prospects and the potential benefit from the policies that have been put in place", Zhan said.
"The Paris Climate Accord is simply the latest example of Washington entering into an agreement that disadvantages the United States", he said from the White House rose garden, as he announced his decision to withdraw from the agreement on June 1st.
"That was done in the absence of the Paris agreement", Tillerson told the Associated Press, "I don't think we're going to change our effort to reduce our emission in the future, either".
The latest polling suggests in withdrawing from global action on climate change, the president is out of sync with the thinking in his own country. "Celsius reduction in global temperature by the year 2100", he said during his lengthy explanation. As the planet's second-largest emitter of greenhouse gases, what the U.S. does domestically on climate change matters a great deal.More news: Russian President Vladimir Putin urges 'joint work' with Trump on climate
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In announcing his decision, Trump said he was "elected to represent the citizens of Pittsburgh, not Paris".
Mr Obama led the chorus of disapproval after Mr Trump confirmed his decision to pull out, saying the Trump administration had chose to join "the small handful of nations that reject the future".
The landmark agreement, which entered into force last November, calls on countries to combat climate change and to accelerate and intensify the actions and investments needed for a sustainable low carbon future, and to adapt to the increasing impacts of climate change.
Under former President Barack Obama, the USA had agreed under the accord to reduce polluting emissions by more than a quarter below 2005 levels by 2025.
What does USA decision on climate mean for our planet?
Russian Federation pledged to reduce its carbon emissions by at least 25 percent below 1990 levels by 2030.