So are you proposing that a vague statement by one of the combatant countries which could be interpreted as a threat to use nuclear weapons in some hypothetical future scenario should be the policy dividing line for Facebook? Back in 2018 the US government suggested that we might use nuclear weapons to retaliate against a serious cyber attack. So by that standard we've been under threat of nuclear war for some time now.

https://www.nytimes.com/2018/01/16/us/politics/pentagon-nucl...