The truth, though disappointing from the point of view of journalism, is that the most promising humanitarian elements of foreign policy tend to be the boring ones. Timely and effective diplomacy can often avert humanitarian catastrophes before they break out at much lower cost than coercive force can end them once they’ve started. And the U.N.’s traditional peacekeeping operations, where parties to a conflict request third-party troops to help monitor and enforce a peace deal, have a solid track record of success but are perennially under-resourced by an indifferent United States. Greater commitment — political, financial, and (when appropriate) military — to these kinds of operations would bring much larger humanitarian benefits than would any hypothetic humanitarian wars.
– Matthew Yglesias, Kosovo and the Rise of the Humanitarian Hawks