As Israeli operations against Hamas wind down, here are seven insights into the month-long conflict:

Missile shield: The superb performance of Iron Dome, the protective system that shot down nearly every Hamas rocket threatening life or property, has major military implications for Israel and the world. Its success signals that "Star Wars" (as opponents maliciously dubbed it upon introduction in 1983) can indeed provide protection from short-range and also presumably from long-range rockets and missiles, potentially changing the future of warfare.

Tunnels: Tunneling behind enemy lines is hardly a new tactic; historically, it has had success, such as the 1917 Battle of Messines, when British mines killed 10,000 German soldiers. The Israel Defense Forces (IDF) knew of Hamas' tunnels before hostilities began on July 8 but failed to appreciate their numbers, length, depth, quality of construction, and electronic sophistication. Jerusalem quickly realized, as the Times of Israel wrote, that "Israel's air, sea and land supremacy is not mirrored underground." The IDF thus requires additional time to achieve subterranean dominance.

Consensus in Israel: Hamas' unrelenting barbarism created a rare consensus among Jewish Israelis in favor of victory. This near unanimity both strengthens the government's hand in dealing with outside powers (Prime Minister Netanyahu admonished the U.S. administration never again to second-guess him) and is likely to move Israeli domestic politics decisively to the right into the nationalist camp.

Middle Eastern response: With the exception of Hamas' state patrons (Turkey, Qatar, Iran), the Islamist terrorists found almost no governmental support in the region. In one striking example,Saudi king Abdullah said of Hamas killing Gazans, "It is shameful and disgraceful that these terrorists are [mutilating the bodies of innocents and proudly publicizing their actions] in the name of religion." How well he knows his mortal enemy...