This photo dated Thursday, June 1, 2017 shows the City Hall of Paris, France, illuminated in green following the announcement by US President Donald Trump that the United States will withdraw from the 2015 Paris accord.
"This is a decision that is a betrayal, not just of US citizens, not just of the citizens right across the world, but indeed it's a betrayal of our children and all future generations", said Richard Di Natale, Australian Greens Party leader.
Climate progress is already underway, and American cities, states, companies, and citizens could pick up the slack.
Columbia University climate scientist Peter deMenocal said he's "devastated", but not pessimistic.
"We provided our islands as a launching pad for them to achieve their objectives and now we are facing the biggest war of our time, they are abandoning us", he said during a visit to neighbouring Fiji.
As that 2009 ad from business leaders stated: "We recognize the key role that American innovation and leadership play in stimulating the worldwide economy". This is the biggest entrepreneurial opportunity of many generations. Not us. India makes its participation contingent on receiving billions and billions and billions of dollars in foreign aid from developed countries.
But ripping up the Paris Climate Accord is the single most malicious act of his presidency so far.
Schweitzer said other countries should stick to their commitments, but warned that attempting to compensate for the US withdrawal by other countries redoubling their commitments would be self-defeating. "I tell you firmly tonight: We will not renegotiate a less ambitious accord".
Merkel on Friday vowed "more decisive action than ever" to protect the climate. "We are increasing investments in renewable energy and energy efficiency". Large corporations, especially those operating in global markets, have had years to get used to the idea that there are likely to be reductions on carbon emissions, and they have been adapting their businesses accordingly for some time.
"We must not sacrifice Australian jobs and push up household living expenses to embark on some politically correct, feel good exercise on the world stage which will do nothing for the environment", Abetz said. "I think the fact that the current administration does or doesn't get it, obviously it's bad, but it's not the most relevant fact".
"Reducing greenhouse gas emissions is a global issue that requires global engagement and action", the company said. While India has not released an official statement on the United States withdrawing from the deal, The Times of India reported on Friday that Indian and U.S. officials have already been in touch, with frantic phone calls and cables being exchanged between the two countries immediately after Trump's announcement.
The president's decision is fundamentally shifting alliances around the world.
Trump, on Wednesday, made a decision to pull out of the landmark global agreement created to fight climate change.
"This is an insane move by this president; the world depends on a sustainable future", said Governor Jerry Brown of California.
In Berlin, German Chancellor Angela Merkel insisted that the USA withdrawal won't prevent the rest of the world from pressing ahead with efforts to curb global warming.
Washington state is also moving ahead with capping carbon emissions and requiring power plants and oil refineries to reduce emissions over time.
France and the United States "would continue to work together", but not on climate change, it said. "There is no going back".