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What should the red lines be for the Iranian nuclear program?

People love to talk about "red lines" for all sorts of challenges, and the Iranian nuclear program is no exception. The United States can, in principle, threaten stronger sanctions if Iran crosses certain red lines. It can threaten military action if Iran crosses others. But it's not clear that setting red lines—particularly in public, where failing to follow through on threats can be costly—is a productive course.

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Interview

The Hezbollah Connection in Syria and Iran

Matthew Levitt interviewed by Bernard Gwertzman

In recent years, the strategic alliance between Iran and Hezbollah has grown to the point where the Lebanese militant group's fealty to Tehran is paramount, a dynamic currently on display in Syria, says counterterrorism expert Matthew Levitt.

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