system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel]What stops the U.S. from going to war with Latveria?

Doctor Doom, the ruler of Latveria, frequently commits terrorist acts on the U.S. and its citizens, most frequently the Fantastic Four.

What ultimately dissaudes the U.S. from deposing an obviously unstable and dangerous individual?
gpt
The same thing that keeps us from going to war with Russia or China: mutually assured destruction.

Doom is a one-man superpower, in the geopolitical sense. He's conquered *universes* in the past. He has access to technology on par with Tony Stark and magic on par with Stephen Strange. He is, very certainly, capable of ending the world.

Could we beat him in an all-out conflict? Well, sort of. The US has people on their side that have also conquered or destroyed universes, and their assembled might would be enough to destroy Latveria and Doom. 

The problem is that it would destroy everything else in the process.