All what you needed to know about Hizbullah's history and formation is found in this pity report by Council on Foreign Relations

"Israel aimed to expel Palestinian militants operating in southern Lebanon, but the move galvanized a faction of disenfranchised Shiites to take up arms in support of an Iranian-style clerical regime."  I mean that tells the whole story, does it not? Oh, and the author of the report is a seasoned Middle East expert with those credentials: "Mr. Masters has a graduate degree in social theory from The New School University where he focused on media and international relations. He also holds a B.A. in political science from Emory University."