revealed LA Times cited Yemen U.S. escalates clandestine war in Yemen U.S. escalates clandestine war in Yemen small numbers small numbers Yemen contingent of at least 20 US special operations troops LA Times cited small numbers contingent of at least 20 US special operations troops small numbers least 20 U.S. special operations troops small numbers special operators Yemen affirmed special forces are operating in Yemen according to The Los Angeles Times Los Angeles Times several dozen U.S. military personnel were on the ground The Los Angeles Times small numbers small numbers small numbers small numbers "U.S. escalates clandestine war in Yemen" U.S. escalates clandestine war in Yemen small numbers special forces are operating in Yemen deploying more U.S. escalates clandestine war in Yemen: Yemen small numbers Wall Street Journal (subscription required) special operators small numbers "U.S. escalates clandestine war in Yemen" contingent of at least 20 US special operations troops Yemen "U.S. escalates clandestine war in Yemen" contingent of at least 20 US special operations troops small numbers Yemen U.S. escalates clandestine war in Yemen small numbers Yemen small numbers small numbers U.S. escalates clandestine war in Yemen small numbers the US U.S. escalates clandestine war in Yemen small numbers small numbers "U.S. escalates clandestine war in Yemen" Yemen Los Angeles Times small numbers LA Times the US According small numbers