From the precincts of the European Union to the United Nations to the editorial pages in the United States, it is being argued that Israel’s response to Hezbollah’s kidnapping of Israelis and firing of rockets into Israel is “disproportionate,” a threat to the region, and could undo the U.S. democracy project in the Middle East. What is disproportion in the Middle East? How should one state respond to multi-state-sponsored terror? Begin with the fundamentals. Hezbollah, once described as “the A-team of terrorists” by former Deputy Secretary of State Richard Armitage, is a terrorist group with a record of killing hundreds...