In a speech to the American Enterprise Institute, Outgoing US Defense Secretary Robert Gates warned against the Shiite group's arming methods and the possibility that it owns chemical and biological weapons, CNN reported Wednesday.
The US official made similar statements last year, but did not back them up with proof. "Hezbollah cruise missiles could threaten US ships with anti-ship missiles with a range of 65 miles," he added.
Two months ago, an Israeli security official provided the Washington Post with a map detailing no less than 550 bunkers, 300 surveillance sites and 100 other facilities the Jewish state believes belong to Hezbollah terrorists in Lebanon.
Most of the sites marked on the map, which appeared in the American newspaper on Wednesday, are located south of the Litani River.