All Policy Analysis by Matthew Levitt

Given the depth of its involvement in Syria, Iraq, and Yemen, Hezbollah will likely continue to head an emerging Shiite foreign legion bent on expanding Iranian influence across the region.

The Lebanese terrorist group continues to operate in Europe despite warnings from the EU.

Even with a deal now signed, the Obama administration still has many tools for countering Iran’s menacing behavior across the Middle East.

The group's establishment of a territorial "caliphate," the emergence of an unprecedented foreign fighter phenomenon, and the rise of violent extremist social media and lone offender attacks have fundamentally transformed the global terrorist threat.

Contrary to recent intelligence assessments by other agencies, the State Department's latest report documents Hezbollah and Iran's ongoing, deep involvement in terrorist activities.

Recent attacks on the Syrian Druze community threaten to further roil sectarian tensions, radicalize Druze elements, and potentially draw Israel into the civil war.

Rather than acting on the mountain of existing evidence uncovered by a tragically slain prosecutor, Argentina is allowing an Iranian fugitive to undermine its investigation into a mass terrorist attack in downtown Buenos Aires.

The assignment of skilled senior operatives to support Houthi rebels in Yemen underscores the importance that Hezbollah attributes to its activities in the Arabian Peninsula.

Given Tehran and Hezbollah's long history of targeting Saudi interests, their recent implicit threats to the kingdom should be taken seriously.

As events in Syria and Iraq convulse the region, the resultant humanitarian disaster and security nightmare have contributed to a reshaping of the terror finance environment.

In addition to its political importance, the EU decision to keep blacklisting Hamas is legally significant in shaping how donor nations move forward on rebuilding Gaza.

Read a collection of Counterterrorism Lectures from November 2013-May 2014.

Governments and financial institutions have taken laudable steps to curtail ISIS financing, but the group is still netting many millions from banks and informal money remitters in areas under its control or just nearby.