The next president will have to deal with many pressing questions, but few are as consequential as this one: Do we want to live in a world in which the number of nuclear weapons is going up or going down? Once the next president is elected, he or she will have to make many choices about US internal nuclear policy: Should we use nuclear weapons first in a crisis? Should there be more than one person involved in the authorization of a nuclear strike? Should we make unilateral changes to our forces? And should we be deploying new low-yield nuclear capabilities? External policy choices on arms control and nonproliferation efforts will also have to be made, many of them all but immediately. The American public should be aware of the candidates’ various nuclear weapons plans before they vote.