Each of Afghanistan's two dueling leaders declares himself president

KABUL, Afghanistan — Each of Afghanistan’s rival leaders was sworn in as president in separate ceremonies on Monday, throwing plans for negotiations with the Taliban into chaos and creating a dilemma for the U.S. as it figures out how to move its peace deal with the Taliban forward. The U.S.-Taliban deal signed just more than a week ago was touted as Washington’s effort to end 18 years of war in Afghanistan and was seen by many Afghans as the best opportunity yet for bringing an end to relentless wars. But the sharpening dispute between President Ashraf Ghani, who was declared the winner of last September’s election, and his rival, Abdullah Abdullah, who charged fraud in the vote along with...