Earlier quoted context omitted.
The current models are static, they do not get modified by self learning. Unless someone already build in a Skynet backdoor, we are safe. ...and I am hoping all nuclear missiles are air gapped anyway...
It doesn't matter if the missiles are air-gapped. AI doesn't need to connect to the missiles and fire them directly, AI can just manipulate the media (conventional, social, all of it) on both sides to engineer a situation in which we would enter a nuclear war.
Good luck with that. Remember how it ended the last time this was tried, with.. peace talks.
If you really want a global thermonuclear war, humans are completely useless. You have to take the matter into your own hands.