Islamic State releases defiant message as U.S. lawmakers criticize strategy to defeat the group – Part 1

Summary: Despite claims from Iraqi officials that the leader of the Islamic State had been wounded or killed, a 17-minute recorded message was released in which he taunted the U.S.-led coalition. Meanwhile, in a House hearing, lawmakers questioned and criticized Pentagon officials about the Obama administration plan to defeat the militant group. Chief foreign affairs correspondent Margaret Warner reports.