Defense expert Chet Richards on Lebanon, Iraq, and the future of the American militaryFor 17 years, a small tribe of military analysts has explored the rise of Fourth Generation warfare, or 4GW, a term coined in a 1989 article for the Marine Corps Gazette to describe conflicts that pit a state against a transnational, non-state opponent. Unlike traditional guerrillas, who try to overthrow their host government, these non-state groups take on other states. For an example, look no further than the war now unfolding in Lebanon between Hezbollah and Israel. Chet Richards, 59, has spent more time than most pondering...