Hizbollah ran the IDF out of Lebanon in 2000. Thanks to Hizbollah, Lebanon is the only territory occupied by Israel for any appreciable time in which no settlements were built. Israel is an aggressive, expanding, oppressive, occupying power. It makes sense for Israels neighbors to be as well armed as possible.
Netanyahu pays hospital visit to family of Palestinian infant killed in arson attack (Haaretz)
from the article: U.S. adviser: Washington hopes to promote Hezbollah 'moderates'