Obama and Romney vow to go after "the bad guys" who attacked the US diplomatic post in Benghazi and who lead al-Qaeda elsewhere in the Middle East. But what does that mean?

Obama says he'll bring the Benghazi culprits "to justice," but doesn't specify whether that means trial in federal court, Libyan court, a military commission at Guantanamo Bay or a drone strike. Romney says we need "to kill them, to take them out of the picture," which sounds like he's even more of drone fan than the president.