The election of a US President who has called global warming a "hoax" raised questions today about America's involvement in the Paris Agreement on climate change and the future of the deal itself.
As the sun rose over the Atlas mountains, news of Trump's victory was still sinking in at UN climate talks in Marrakech, Morocco, where delegates from almost 200 countries, including the US, were meeting for the first time since the landmark deal entered force.
The first official reaction came from an alliance of small island nations who fear they will be washed away by rising seas.
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"America has led this technological transformation and can continue to create jobs and opportunity in this area - something people everywhere will benefit from," Ibrahim said.
Environmental activists were devastated by the election result, with May Boeve, leader of the 350.Org environmental group, calling it a "disaster."
"Trump will try and slam the brakes on climate action, which means we need to throw all of our weight on the accelerator," Boeve said.
"In the United States, the climate movement will put everything on the line to protect the progress we've made and continue to push for bold action."
In contrast to Barack Obama, who made climate change a key policy area, Trump has called global warming a "hoax" on social media and pledged in May to "cancel" the Paris deal, which was adopted in the French capital last year.
More than 100 countries, including the US, have formally joined the agreement, which seeks to reduce emissions of climate-warming greenhouse gases and help vulnerable countries adapt to rising seas, intensifying heat waves, the spreading of deserts and other climate changes.
The withdrawal process would take four years, an entire presidential term, under the terms of the agreement. However, Trump could also decide to simply ignore the Obama administration's Paris pledge to reduce US emissions by 26-28 per cent from 2005 levels by 2025. The pledges are self-determined, and there is no punishment for countries who miss their targets.
It's unclear what would happen to the deal if the US dropped out, though US negotiators and others said before the election they believed the rest of the world would go ahead because they see a transition to clean energy in their national interests.
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