For the background information to this story, check out ABC:
Rep. Pete King, the chairman of the House committee on Homeland Security, wrote FBI Director Robert S. Mueller III today to formally request that the bureau launch a comprehensive investigation into leaks of detailed and highly classified information about an international anti-terror operation involving al Qaeda in the Arabian Peninsula earlier this month.
Let’s imagine you were given a security clearance and had access to sensitive national security information. Telling another individual this information that did not both share the appropriate clearance and have a "need to know" would be considered a crime.
Now imagine someone leaks this sort of classified information to the media. It should be a crime as well. The Obama administration should be out in full force going after these guys.