Wolf Blitzer delivers the most important breaking news and political, international, and national security stories of the day. Tune to The Situation Room weekdays 5-6:30pm ET on CNN.
CNN's Jim Sciutto gives more information on the missing Malaysia airliner and possible links to terrorism.
CNN's Jim Sciutto is at the Magic Wall to explain why Ukraine has become such an important battleground between Russia and the West and what's really at the heart of the crisis.
NOTE: Those 22% of Americans who say the U.S. should act as the "world's policeman" were part of a CNN/ORC Poll conducted in September 2013, just as the U.S. was contemplating a strike in Syria.
As pro-Russian elements in Ukraine fight back against pro-Western groups, Russia appears to be moving closer and closer to a military intervention. What is Russia up to, and how will the United States react? CNN's Jim Sciutto reports.
CNN's Jim Sciutto explains the strong ties Russian President Vladimir Putin has with conflict-torn Ukraine.
A new round of nuclear talks between Iran and the world's major powers has just begun in Vienna, but many already have low expectations that the meetings will be successful. CNN's Jim Sciutto reports.
Sen. Lindsey Graham wants to rethink aid to Afghanistan because of the release of 65 detainees.
The country's top intelligence official delivers a sobering assessment of the threats facing the US. Jim Sciutto reports.
As tensions with Iran thaw after last year's historic nuclear deal, Tehran is issuing new threats against the U.S., promising to send warships into American maritime borders and testing new long-range missiles. CNN's Jim Sciutto reports.
News that broke in "The Situation Room": CNN's Jim Sciutto reports that North Korea has moved American detainee Kenneth Bae back to a labor camp after allowing him to receive treatment at a hospital.
CNN's Jim Scuitto takes a tour inside the former U.S. embassy that was taken over by Iranian students in 1979.