In a letter to Mr. Trump after he won the election, Chancellor Angela Merkel of Germany wrote, “Partnership with the United States is and will remain a keystone of German foreign policy, especially sobr that we can tackle the great challenges of our time.” They include, she wrote, “working to develop farsighted climate policy.”br As Mr. Trump and his advisers weigh their Paris options, one proposal is gaining traction, according to participants in the debate: Mr. Trump could declarebr that the Paris agreement is a treaty that requires ratification by the Senate.br Top Trump Advisers Are Split on Paris Agreement on Climate Change -br By CORAL DAVENPORTMARCH 2, 2017br WASHINGTON — The White House is fiercely divided over President Trump’s campaign promise to “cancel” the Paris agreement, the 2015 accordbr that binds nearly every country to curb global warming, with more moderate voices maintaining that he should stick with the agreement despite his campaign pledge.br An article on Friday about a disagreement among aides to President Trump over the Paris climate change accord referred incorrectly to the agreement’s legal requirementsbr that countries publicly put forth their emissions reductions targets, and later put forth reports verifying how they are meeting the targets.br Mr. Trump wants to make a decision by next week, say people familiar with the White House’s debate on the climate pact, in orderbr to announce his executive order to undo Mr. Obama’s climate regulations in conjunction with his plans for the Paris deal.