I think that many agreements have a minimum number of required signatories before coming into effect. But once that number is met, in theory, other countries ap

I think that many agreements have a minimum number of required signatories before coming into effect. But once that number is met, in theory, other countries approving or not approving has no effect. This can vary in practice, though, as the United States or UK not signing on is vastly different than Austria not passing an agreement. This isn't meant to disparage any other country but in international politics that's just kinda the way it goes.