https://www.pbs.org/newshour/show/heres-goes-presidents-decision-launch-nuclear-weapons

It looks like, maybe, there are some protections in place for a"screw it, screw them" type decision. The link doesn't offer me too much confidence, though.

I have confidence that most in positions of power "would never", but some of them are not behaving in predictable ways, particularly the president.