Wolf Blitzer delivers the most important breaking news and political, international, and national security stories of the day. Tune to The Situation Room weekdays 5-7pm ET on CNN.
President Obama sends a letter to Iran's Supreme Leader seeking cooperation against ISIS. Jim Sciutto reports.
Although they found themselves on opposite sides of the Syrian Civil War, Iran and Hamas may be rekindling a partnership to take on their shared enemy, Israel. CNN's Brian Todd investigates those reports.
The U.S. may soon be working with an unlikely partner to stem the violence in Iraq: Iran. After more than 35 years of bitter tension, the two countries have found a common ground in the terrorist militants rampaging across Iran. CNN's Elise Labott on statements from U.S. officials that indicate a willingness to work together.
Hackers in Iran are using social media to target American and Israeli officials in an elaborate cyber-spying scheme. CNN's Elise Labott reports.
A new book says the CIA helped a former member of the Iranian National Guard defect in exchange for information.
Photos show an American corporate airplane on a runway in Iran, where U.S. businesses are prevented from doing business because of sanctions. What is it doing there? CNN's Suzanne Malveaux investigates.
Three days after Malaysia Airlines flight 370 vanished, new details are emerging about the two passengers traveling with stolen passports. CNN's Nic Robertson reports.
Last October, a massive cyber attack hit the American military's websites, and some think Iran was behind it. CNN's Brian Todd reports on the threat of all-out cyber war between the U.S. and Iran.
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.
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.