http://www.nytimes.com/2016/05/24/world/asia/obama-mullah-mansour-taliban-killed.html?smprod=nytcore-iphone&smid=nytcore-iphone-share An American drone strike in a restive province of Pakistan killed Mullah Akhtar Muhammad Mansour, the leader of the Afghan Taliban, the White House confirmed on Monday. Calling the death “an important milestone,” President Obama said in a statement, released just as he was meeting with top officials in…