Death and taxes are always with us, and so are arguments about whether nations ever have the right or duty to intervene in the affairs of others. The case for “humanitarian intervention,” under a variety of names, has been asserted at least since the great powers threw their weight behind Greece’s struggle for independence in the 1820s, but in its modern form was developed during the Wars of the Yugoslav Succession, when it appeared to many that armed force was the only way to end terrible atrocities.
