why, and how are all still murky. on january 14th american aide worker warren weinstein kidnapped in 2011 an italian, giovanni la porto held since 2012 were killed when an al kiv was hit by a cia drone strike. another american a al qaeda commander was also killed. on january 19 a second strike killed al qaeda's top spokeman adam gudan with a million dollar bounty on his head. >> he was not specifically targeted. >> the problem in these and other instances is that the cia doesn't always know who it is killing. targeting only al qaeda leadership. two years ago president obama pledged to scale back the drone campaign. >> before any strike is taken there must be near certainty that no civilians will be killed or injured. >> reporter: but so-called