Iran admits responsibility in shootdown of Ukrainian jetliner

After days of denials, and under mounting international pressure, the Iranian government now says its armed forces unintentionally shot down a Ukrainian jetliner this week, killing everyone on board. At a briefing this morning, the head of Iran's air defenses said "human error at a time of crisis caused by U.S. adventurism" caused the Ukrainian Airlines jet to be mistaken for a hostile target. Holly Williams reports from Baghdad.