Examining the life and tactics of Imad Fayez Mugniyah, the Hezbollah military mastermind killed in Damascus on February 13, 2008. Before 9/11, Mugniyah was said to be responsible for the deaths of more Americans than any other terrorist.

Although it seems clear the United States will not change its current position and sign onto the Kyoto treaty, some U.S. companies are starting to push for mandatory federal regulations on greenhouse gas emissions.

Counterterrorism and urban security expert R.P. Eddy discusses what New York City is doing to prevent another terrorist attack.

John Pike of GlobalSecurity.org discusses the different types of arms in use in the Mideast conflict, and the problem with the media's misuse of military terminology.

Chechen separatist Shamil Basayev is one of several rebel leaders to die violently in recent years. His death leaves the future of the movement in doubt.

Andrei Babitsky of RFE/RL, one of the few journalists to have met and interviewed Chechen rebel leader Shamil Basayev, says his death may weaken the Chechen separatist movement, but will not kill it.

Canada has a comparatively open immigration policy designed to attract a group of diverse, educated professionals. But recent arrests linked to a terror cell have raised questions about integration of Muslims and lax policy.