What a silly comment. You're literally describing the plot of several sci-fi movies. Nuclear command and control systems are not taken so lightly.

And as for the Chinese spy balloon, there was never any risk of a war (at least not from that specific cause). The US, China, Russia, and other countries routinely spy on each other through a variety of unarmed technical means. Occasionally it gets exposed and turns into a diplomatic incident but that's about it. Everyone knows how the game is played.