Islamist Web sites, aggressive anti-American rhetoric and an increasing number of self-generating terror cells in Western countries indicate that violent factions of Islam are spreading.

CNN: Report: Al Qaeda may use Iraq operatives to attack U.S.

On the eve of President Bush's major address tonight on the status and prospects of the War on Terror, the Center for Security Policy released a new "web ad" warning that there is no way the United States can safely follow the advice of Mr. Bush's critics who would have us cut and run from Iraq and Guantanamo Bay.

CENTERFORSECURITYPOLICY: Don't cut and run in the War on Terror

Although a claim of responsibility appeared on an al-Qaeda-linked Web site this morning, reaching a conclusion in terror investigations can be a long and complicated process.

NPR: Investigators Cautious on Assessing Blame for Attacks

One of them, Abr Aheem, posted a message in Arabic on a Web site translated as "the terror.com, " advertising that the Electronic Al-Qasam Brigade would be conducting an attack.

FORBES: Jihadists@Work

The tape emerged on radical Islamist Web sites, just two days after the United States marked the eighth anniversary of the September 11, 2001, terror attacks.

CNN: 'Bin Laden' tape: Obama can't stop war

Although it has run a web of businesses in the region for decades, since 2005 the economic importance of these businesses has been eclipsed by the terror group's involvement in worldwide cocaine distribution facilitated through its close ties with Chavez and FARC.

CENTERFORSECURITYPOLICY: Iran's global reach