If anything, reducing the American arsenal is likely to cause the very instability that the U.S. seeks to avoid. Without an American commitment to a strong nuclear deterrent, the country’s friends and allies could develop doubts about where the U.S. stands and what it would do to safeguard its own interests and theirs.
Many other nations depend on U.S. nuclear-security assurances and could come to question whether further reductions in the U.S. nuclear arsenal—and an American political leadership that prizes disarmament posturing over the hard work of counter-proliferation—can credibly protect them against proliferators and other threats.
Corker and Inhofe: ‘Nuclear Zero’ Offers Nothing Worth Having – WSJ.com
The authors are right about this instability, but it’s already too late. Unless the US has an arsenal big enough to launch multiple independent strikes over several years, then it isn’t big enough. The key to deterrence is making it personal. Enemy leaders, like those in Russia and China, must know that ultimately they (personally) cannot survive attacking the US. Right now they (the leaders) can survive, so the US has already crossed the line into instability. Also, it’s not so much the number of warheads that matter. It’s the delivery vehicles. If you can’t get a bomb to its target, then it’s not all that good, is it? Right now the US is short of delivery vehicles.

