The ongoing conflict between Israel and the Lebanese militant group Hezbollah is now in its fourth decade and shows no signs of ending. Raphael D. Marcus examines this conflict since the formation of Hezbollah during Israel’s occupation of Lebanon in the early 1980s. He critically evaluates events including Israel’s long counterguerrilla campaign throughout the 1990s, the Israeli withdrawal in 2000, the 2006 summer war, and concludes with an assessment of current tensions on the border between Israel and Lebanon related to the Syrian civil war.