Legal principles matter as two major democracies—Taiwan and Ukraine—are threatened by superpower neighbors. Whether one argues about Taiwan’s status as a country or a province of China, it is a vibra…

If conflict were to break out between China and Taiwan, the latter’s right to defend itself would hinge on its international legal status and the circumstances of the hostilities.

Syria is likely to remain a broken country for years to come. The latest strikes did not change that reality.

Saudi Arabia is no closer to achieving its objectives in Yemen, and international pressure to end the war is growing. The kingdom can cease its bombing campaign and still defend its national interest…