Ibrahim al-Asiri, a senior al-Qaeda bomb maker and terrorist coordinator, was killed two years ago in a United States operation in Yemen, the White House announced on Thursday.
Al-Asiri had been in hiding in Yemen for years and was the repeated target of U.S. drone strikes. The U.S. mistakenly believed they had killed him in a 2011 strike. They later targeted a man they believed was al-Asiri in a May 2012 strike, but he turned out to be another al-Qaeda leader.
As TIME wrote in 2013, the Obama administration believed al-Asiri was “the most dangerous terrorist in the world.”
