David Cameron's recent speech on Britain and the European Union went down pretty well with his party at home but was coolly received across the Channel. The U.K. prime minister called for a “new settlement” to include repatriation of some powers ceded to the center in previous treaties. At this, most other EU leaders rolled their eyes. Constant moaning and foot-dragging aren’t what you want in a partner. The trouble is, Britain has a point -- one that other EU states should weigh carefully, not for Britain’s sake but for their own.