Nicaragua says it will join the Paris climate accord, leaving Donald Trump and Syrian President Bashar al-Assad as the only world leaders rejecting the landmark 2015 agreement. Nicaragua had been a holdout, arguing far more dramatic action is needed to prevent catastrophic climate change. But the country’s vice president said Monday the deal is “the only instrument” the world has to tackle global warming. President Trump announced in June he would withdraw the U.S. from the Paris accord, prompting condemnation from climate activists and heads of state in every corner of the globe.