@wgiwf @ChristiJunior I guarantee you that within the next ten to twenty years, China, Russia, or India will attempt to "lawfully withdraw from" or outright break the treaty if only because they no longer see a point in letting a piece of paper restrict them from holding an very key advantage over other nations, especially against their enemies of the astronomically capable USA and Europe. Hell, Trump probably thought about brushing aside the treaty at certain points in the past eight years, thinking Reagan's failed SDI project was a good idea while creating a "Space Force" military branch and "rods from God" weapon project Trump is probably hoping will be expanded one day by a mix of Musk, other space-enthusiast businessmen, and his hopeful political successor.
That treaty was created and signed during a time when the main nations doing any serious space project was in the low single digits and nobody, not even those astronomical countries, wanted nukes flying overhead pointing downwards at the ready to blow everyone to Hell, a fear you could see in works like in 2001: A Space Odyssey. The USA and the Soviet Union saw themselves having some vague moral obligation to not escalate the build-up in a place nobody wanted either side to have hegemony over, and both having people that wanted space to be solely the venture of mankind's scientific and exploratory struggles, not militaristic. That time and world that created the treaty doesn't exist anymore.
That is one thing some of more sober sci-fi writers understood and got right is that unsanctified human nature won't deprive itself of violence when man thinks he can get away with violence, without any higher morality or higher spiritual motivation stopping his hostile desires. Pics semi-related.