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.

The United Kingdom’s highest court dealt a blow to the push for a new referendum on Scottish independence. What comes next?