“Osama bin Laden “breached the taboo” limiting the scale of terrorist attacks because he has no state controlling him, an Israeli terrorism expert said Monday in Denver.

Yoram Schweitzer, a researcher at the International Policy Institute for Counter-Terrorism at the Inter-Disciplinary Center in Herzliya, Israel, was in Denver Monday for a seminar for local emergency personnel.

State sponsors of terrorism generally have national interests they want to protect, and that puts limits on just how far they are willing to go in terrorist attacks, Schweitzer said in an interview at the Rocky Mountain News.”