Joe Biden is now the vice president who will not be president. He’s been VP for seven and a half years, preceded by decades of work on U.S. foreign policy in the Senate, but the question remains whether he is distinctive in any memorable way for his work in international affairs. Was he simply a glad-handing flack pushing the Obama agenda, a manic schmoozer of foreign leaders? A gaffe-prone foreign-policy dilettante who, in the long run, won’t matter?