Hezbollah runs an "excellent, diverse, and hard-to-target" military communications network, which Hezbollah leader Hassan Nasrallah called "the group's most important weapon" in 2008. Government attempts to shut down this network caused the 2008 Lebanon conflict. The network consists primarily of fiber optic cables spanning most or all of Lebanon, supplemented by copper wires and a Wimax installation in Beirut. Hezbollah says that their network does not have commercial uses, does not penetrate Christian areas, and is an integral part of their arsenal. These claims are disputed.