President Donald Trump announced Thursday he would pull the United States out of the landmark Paris Climate agreement, sending shockwaves through the global community and drawing the ire of environmental leaders. And he will stick to the process laid out in the Paris agreement - which could take the United States four years to leave the deal coinciding with the next presidential election, meaning American voters could have the final word on the decision.
It is a shame that Trump has chose to shirk America's global responsibility and turn his back on these developments. Here is what you need to know.
Since carbon emissions are the biggest cause of global warming, the Paris accord states that countries should strive to reach peak emissions "as soon as possible".
No. He set the USA on a course to withdraw from the deal. Nearly 200 countries remain in the pact, which remains in effect regardless of the USA position.
"I can not, in good conscience, support a deal that punishes the United States", he said, decrying the "draconian financial and economic burdens the agreement imposes on our country".
He said the majority of countries who have signed the accord had done so out of national interest, such as China, which signed on for two reasons - and not because of the US. That would have made it harder to rejoin the deal later.
The Paris accord came into effect on 4 November 2016.
A number of figures from USA industry expressed their dismay at Trump's move.
With President Donald Trump, decisions are often served with a side of drama.
India has already made it clear that it would continue with its climate actions and has reaffirmed its commitment to the Paris Agreement.
Trump spent much of his speech saying he is willing to renegotiate the accord so that it is more fair to America. He said it would have to force deeper cuts from other countries.
Now that the USA has pulled out of the deal, China, the world's second largest emitter, becomes the dominant negotiator in climate change talks - and China's ties with India remain tense.
The real-estate tycoon said he made the decision as the deal was unfair to the U.S. and badly hit businesses and jobs. "The decision reeks of ignorance and condemns United States foreign policy into infamy", Legarda said in a statement on Friday.
Thursday's move could potentially boost carbon-intensive industries, such as coal companies and heavy manufacturers, while reducing demand for low-carbon alternatives.
"The promise of Paris is that it puts us on a path to emissions reductions with the hope that countries will tighten their commitments every few years". South Africa's government calls the USA pullout "an abdication of global responsibility".
"We don't want other leaders and other countries laughing at us any more".
The pact was the first legally binding global deal to fight climate change.
The United States, under former President Barack Obama, had committed to reduce its emissions by 26 percent to 28 percent from 2005 levels by 2025. Environmentalists argue that leaving Paris reduces the pressure on Trump to reconsider those policies.
Conway's move, questioned at the time, foreshadowed a White House where aides aired dissent more publicly than in previous administrations, often on television where they suspected the president would see it. Others in Washington picked up on that tactic: Republican lawmakers on both sides of the health care debate used TV appearances to lobby the president. Major emitters including China and India have shown strong support for Paris. The loss of a superpower represents more than just whatever this will mean for emissions and temperature targets.
After his election, Trump roiled Beijing by taking a phone call from the leader of Taiwan, which China views as a breakaway province.
The consortium also estimates that United States emissions would remain relatively flat if Trump succeeds at rolling back those Obama policies, increasing the country's total greenhouse-gas emissions by 400 million tonnes of carbon dioxide by 2030, compared with previous projections.
Some executives from coal companies have weighed in, arguing the USA should stay in with reduced emissions cuts targets, with an eye toward ensuring that Washington keeps some influence over the future of the global energy mix.
China and the European Union have swiftly moved to fill the leadership void on the Paris climate pact left by the U.S. pullout.
Will it affect the USA economy? As a developing nation, India is one of several countries eligible for funds from the United Nations' Green Climate Fund, just as U.S. is one of several countries that will contribute to it.
"Apparently these big companies ran the numbers". Stephen Schwarzman, CEO of Blackstone Group, leads it. Such alliances "build momentum for a clean-energy future", Brown told The Associated Press in an interview.