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The world is outraged at Israel's blockade of Gaza. Turkey denounces its illegality, inhumanity, barbarity, etc. The usual U.N. suspects, Third World and European, join in. The Obama administration dithers.

But as Leslie Gelb, former president of the Council on Foreign Relations, writes, the blockade is not just perfectly rational, it is perfectly legal. Gaza under Hamas is a self-declared enemy of Israel -- a declaration backed up by more than 4,000 rockets fired at Israeli civilian territory. Yet having pledged itself to unceasing belligerency, Hamas claims victimhood when Israel imposes a blockade to prevent Hamas from arming itself with still more rockets.