Was it Constitutional to Kill Osama bin Laden?

Was it constitutional for President Obama to kill Osama bin Laden? How about the killing of Anwar al-Awlaki, an American citizen living in Yemen? The answers are more complex than you might think. We talk to John Bellinger, former Legal Advisor to both Secretary of State Condoleezza Rice and to the National Security Council. We also speak with Professor Robert Turner of the Center for National Security Law at the University of Virginia.