WASHINGTON, July 7 (UPI) -- One recurring question that has been at the forefront of most intelligence agencies since the Sept. 11, 2001, attacks by al-Qaida on the World Trade Center in New York and the Pentagon just 1 mile outside Washington concerns the ongoing efforts by terrorist groups to acquire weapons of mass destruction: chemical, biological and mostly nuclear.

HAIFA, Israel, Nov. 1 (UPI) -- Israel will fortify its commercial airplanes with new, laser-based missile-defense technology designed by Elbit subsidiary El-Op, the company announced this month.

WASHINGTON, Aug. 23 (UPI) -- A New York Police Department report issued Aug. 15 is the most thorough study yet describing the trajectories of radicalization that produced operational terrorist cells around the world, and can help authorities find ways to slow the process.

WASHINGTON, Sept. 26 (UPI) -- Americans must make a complete change in how they approach security policy and how they act to protect vital facilities and infrastructure in order for such eff