U.S. military teams and intelligence agencies are deeply involved in secret joint operations with Yemeni troops who in the past six weeks have killed scores of people. The operations, approved by President Obama, involve several dozen troops from the U.S. military's clandestine Joint Special Operations Command (JSOC), whose main mission is tracking and killing [targeted persons]. Obama approved a Dec. 24 strike against a compound where a U.S. citizen, Anwar al-Aulaqi, was thought to be. He has since been added to a shortlist of U.S. citizens specifically targeted for killing or capture by the JSOC. The combined efforts have resulted in more than two dozen ground raids and airstrikes. After the Sept. 11 attacks, Bush gave the CIA, and later the military, authority to kill U.S. citizens abroad. The Obama administration has adopted the same stance. Both the CIA and the JSOC maintain lists of individuals, called High Value Targets" and "High Value Individuals," whom they seek to kill or capture. The JSOC list includes three Americans, including Aulaqi, whose name was added late last year. As of several months ago, the CIA list [also] included three U.S. citizens.