People don’t generally remember this now, but the Thatcher government was extremely unpopular prior to its victory in the Falklands. Given all of his failures at home, will Trump view North Korea as a similar opportunity to force all of his critics to shut up? I don’t see how he can resist.
Of course, Argentina didn’t have the ability to kill millions of innocent bystanders in the process, but to Trump, that is probably just a detail, and he isn’t one to sweat the small stuff.