ABC News' Yunji DeNies reports: de Nies: Robert, on that point about security, you talked about the Americans, but what about the Iraqis? Five Americans were killed on the eve of the handoff. Are you confident in the Iraqi security force's ability to take on this task? GIBBS: Well, more importantly, General Odierno's confident in — in their ability as we move forward. I think, as General Odierno has said over the course of the past few days, it's not surprising that we've seen high-profile incidents in which extremists seek to kill innocent civilians in order, in many ways, for them to try to convince their followers that — that — that what's happening today is a result of their actions. And, obviously, it's not. We will continue to monitor the situation, as I said. And at this point, it looks like these are fairly isolated incidents, as we've seen the level of violence as a whole continue to decrease across Iraq.