Kabul, Afghanistan—First responders work near the site of a large truck bomb that killed at least 150 people, wounded hundreds and damaged several buildings on May 31, in the affluent diplomatic quarter in central Kabul, home to embassies and the presidential palace. Though the Taliban has denied responsibility, the Afghan government has blamed the group’s Haqqani wing for the attack. The attack highlights the lack of security in Afghanistan, and President Donald Trump is deciding whether to deploy an additional 5,000 American troops there.