U.S. military leaders say three top figures from the Islamic State have been killed by U.S. airstrikes, including a military chief and a deputy of Islamic State leader Abu Bakr al-Baghdadi. The news comes as the whistleblowing website WikiLeaks has published an internal CIA document which reveals the agency’s doubts about the effectiveness of such killings. The document, which is from 2009, describes both the positive and negative impacts of assassinating so-called high-value targets. It warns that such operations can “[increase] the level of insurgent support,” “[strengthen] an armed group’s bond with the population,” “[radicalize] an insurgent group’s remaining leaders.” WikiLeaks notes, “After the report was prepared, U.S. drone strike killings rose to an all-time high.”