ایران

The costly siege has spurred Iran to withdraw or relocate certain IRGC units, but this is unlikely to hurt the Assad coalition's strategy in Aleppo so long as Hezbollah and other Shiite militias remain willing to fight there.

As authorities scramble to prepare for the ways in which the Islamic State threat will continue to evolve, many lessons can be learned by looking at the factors that led to its rise. This seventh volume of Counterterrorism Lectures traces ISIL's evolution during 2015.

While Hezbollah's next war with Israel seems inevitable in the long term, recent events and rhetoric suggest that the group and its Iranian patron will focus on targeting Saudi interests in the meantime.

نویسندگان: مهدی خلجی و فرزین ندیمی

Although Hezbollah and its affiliates are highly unlikely to attack the Rio Olympics, the group's troubling activities in Brazil and neighboring countries should not be ignored.

Cyber is emerging as Iran's weapon of choice for dealing with domestic opponents and foreign adversaries. Accordingly, Washington needs to better understand the dynamics governing cyber deterrence and escalation vis-à-vis the Islamic Republic. In this Research Note, military expert Michael Eisenstadt explains why Tehran has come to rely increasingly on

Disappointed with the nuclear deal and sensing that Iran is challenging its leadership role in Islam, Riyadh seems prepared to ramp up bilateral tensions via oil production increases, sectarian provocations, and other tactics.

The Cipher Brief sat down with Matt Levitt, former deputy assistant secretary for intelligence and analysis at the Treasury Department, to discuss Hezbollah's roles in Lebanon and Syria and as a proxy for Iran. According to Levitt, despite losses in Syria, Hezbollah remains a threat to Israeli security and U.S

The United States should not let Iran define effective sanctions relief at the expense of continued implementation of nonnuclear sanctions.