Climate negotiators return for talks in Bonn on Tuesday under the cloud of Donald Trump's threats to pull America from the hard-fought Paris Agreement, as the president prepares to hold a special meeting to discuss United States participation.
UN climate negotiators in Bonn were left frustrated Tuesday as the White House postponed a meeting to determine whether the United States will stay in the 196-nation Paris Agreement to curb planet-harming fossil fuel.
"As other countries invest in advanced technologies and move forward with the Paris Agreement, we believe the United States can best exercise global leadership and advance USA interests by remaining a full partner in this vital global effort", the letter says.
This story will be updated.
The United States is the world's no. 2 carbon polluter, after China.
While the new Trump administration decides what to do, the Chinese foreign ministry quoted Xi as telling his French counterpart, newly-elected Emmanuel Macron, in a phone call that the two countries "should protect the achievements of global governance, including the Paris Agreement".
"It's been postponed", a senior official told AFP on Tuesday.
The talks are being held at a time when there are doubts whether the United States will remain committed to the agreement.
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A White House official said the delay came amid scheduling conflicts.
Current pledges place the world on track for average global warming of around three degrees Celsius over pre-Industrial Revolution levels - far above the limit of two degrees Celsius (3.6 degrees Fahrenheit) targeted in the Paris deal.
It does not mention an option of reducing ambition and some USA legal experts argue that the wording makes it impossible for Trump to stay in the agreement and carry out his promises to promote the high-emitting us coal industry. The iconic jeweler posted an open letter on its social media accounts on Tuesday morning, warning POTUS about the dangers of climate change and asking him to keep America involved in the Paris Climate Agreement.
Regardless of whether or not the USA leaves the Paris agreement, American climate scientists who doubt their work will find traction on this side of the Atlantic have an ally on the continent.
Secretary of State Rex Tillerson, the former chief executive of the oil company Exxon, said at his Senate confirmation hearing in January that he supports staying in the deal.
The G-7 meeting is expected to be a prime opportunity for world leaders to push Trump to stay in the historic 2015 pact, in which each of almost 200 countries agreed to their own nonbinding cuts or limits in greenhouse gas emissions.
Trump's inner circle has been tasked with providing the president, who has flirted with ditching the landmark agreement, with a range of policy options.