Hard pact to follow: the Good Friday Agreement at 25

The famed power-sharing deal did its work of sharply reducing sectarian violence, but a quarter-century on it has led to depressingly dysfunctional politics. The next generation of vaccines is already on the way—and the first thing to do is get them out of the freezer. And why the long-frothy market for works by Pablo Picasso may at last be cooling.For full access to print, digital and audio editions of The Economist, try a free 30-day digital subscription by going to www.economist.com/intelligenceoffer