This was ratified by the US Senate, almost unanimously, in 1992. Legal experts are unclear on the process of leaving the treaty, but any effort by the US to leave would be seen as a body blow to the principle of multi-lateral action to tackle the world’s greatest threat.

As well as these headline-grabbing international actions, the new Trump administration is likely to push for a major ramp up of oil and gas exploration within the US, roll back environmental protections as well as impose heavy tariffs on electric vehicles and solar panels coming from China.

“You are looking at, overall, a ‘drill baby drill’ philosophy,” Dan Eberhart, chief executive officer of oilfield services company Canary LLC told Bloomberg News.

“You are going to see offshore lease sales, you are going to see pipelines move much quicker, you are going to see fracking on federal lands and a mindset that is focused on lowering energy costs for consumers.”

There was a big drop in the share price of , externalturbine manufacturers, external on Wednesday, as fears grew that US offshore wind farms would be cancelled by a Trump presidency.

But in the longer term, it is not clear if the new president will turn back the clock for coal, oil and gas, or curtail the growth of sustainable energy sources.

For a start he faces opposition – and notably from within his own party.

Biden’s Inflation Reduction Act, which may ultimately channel $1 trillion of spending into green energy, has been hugely beneficial to Republican districts.

According to one analysis, some 85% of the money has been in areas that elected, external Republicans, external.

With energy watchdog the International Energy Agency reporting that global investment in clean technology is running at double the size of coal, oil and gas in 2024, the new US administration might not want to drive this type of green investment into other, more eager countries.

Climate leaders are putting a lot of faith in the fact that the transition to green energy will not be derailed by the new Trump administration.

“The result from this election will be seen as a major blow to global climate action,” said Christiana Figueres, the former UN climate chief.

“But it cannot and will not halt the changes under way to decarbonise the economy and meet the goals of the Paris agreement.”