All Policy Analysis by Matthew Levitt

What al-Qaeda, ISIL, and the Paris attacks can teach us about the jihadi divide.

In five brief video clips, Dr. Matthew Levitt analyzes the recent terrorist attacks in Paris, describes their origin in ISIS and al Qaeda, and assesses what the United States and its allies can do to combat homegrown violent extremism.

Although Iran's proxies are fighting ISIS in parallel with the U.S.-led effort, their actions and radical Shiite agendas are diametrically opposed to the goal of building inclusive governments and societies in Iraq and Syria.

The group's legal challenge will likely succeed for now, but the EU can reinstate the ban by relying on the plethora of evidence from European terrorism cases involving Hamas.

An in-depth conversation on the challenges of battling jihadist ideology in the ISIS era.

The question remains open as to how effective the Iranian proxy can be fighting simultaneously against the Syrian rebels and the Israeli military.

By focusing on financial transactions and income from oil, kidnapping, and major donors, the Treasury Department could severely undercut the group's funding streams.

A detailed look at where the group's money comes from, how the Treasury Department and its international partners are working to cut it off, and what needs to be done next.

Given its recent track record of targeting Israelis, Hezbollah's decision to take public responsibility for a new border attack likely has more to do with burnishing its domestic "resistance" credentials than sending a deterrent signal to Israel.

Given the violent message the group continues to convey in Arabic to viewers young and old, it will be difficult to achieve full Palestinian reconciliation, a long-term ceasefire with Israel, or large-scale reconstruction of Gaza.

Regardless of what Washington calls the group, intelligence reports show that it represents a very real threat.