WASHINGTON, March 30, 2007 – Al Qaeda’s use of chlorine gas against civilians and use of children as suicide bombers highlights the terror organization’s barbarity, a Joint Staff spokesman said here today. Al Qaeda extremists in Iraq are using chlorine canisters and chlorine-carrying trucks to attack civilian targets, said Army Maj. Gen. Michael D. Barbero, Joint Staff deputy director for operations. On March 23, Barbero said, Iraqi police foiled an attack in Ramadi that could have caused catastrophic casualties. The police intercepted a truck carrying 5,000 gallons of chlorine and two tons of explosives. On March 28, two chlorine-laden...