BRUSSELS—The European Union said President Donald Trump’s order reversing key clean-energy policies would eliminate the main pillar of U.S. efforts to fight climate change, undermining America’s leadership in a critical global effort. Following monthslong concern that Mr. Trump would withdraw the U.S. from the landmark 2015 Paris Agreement to prevent climate change, the president’s move Tuesday to roll back domestic initiatives to...

Source: Wall Street Journal March 29, 2017 00:00 UTC