Well, that's a bunch of ignorant baloney. If Russia and China have these capabilities today, then opponents we DO engage will have them tomorrow... unless, you

Well, that's a bunch of ignorant baloney. If Russia and China have these capabilities today, then opponents we DO engage will have them tomorrow... unless, you know, someone fixes the problem. Not to say that we have nuclear assurances against a direct conflict between the US and Russia, we don't have such assurances for US proxies engaging Russian or Chinese proxies. The US needs to have enough conventional deterrence to prevent major proxy wars - which, by the way, destabilize the world economy and make the world a crappier place for everyone, including the "third-world-lives-don't-matter" isolationists such as yourself.