Afghan killings won't change US strategy: expert
US strategy in Afghanistan "won't change because it can't change" says foreign policy expert Michael O'Hanlon, commenting on the fallout from a US soldier's shooting rampage which killed 16 civilians. Excerpts from interview with Michael O'Hanlon, senior director at the Brookings Institution and the co-author of a recent book on Obama's foreign policy, "Bending History".Duration: 00:48