US Missile-Defense System Inflames Tensions with Russia

President Bush's plans to deploy a missile defense system in eastern Europe has unnerved Russia, causing President Putin to warn today that Moscow could take retaliatory steps. Is a new arms race likely? What effect will public opposition in Poland and the Czech Republic have on Bush’s deployment plans? What about complaints that the defensive shield is still an unproven technology?Also, Islamist militants in Iraq say they'll release a video of three missing American soldiers, and the first-ever international war-crimes trial of an African head of state. Sara Terry guest hosts.