User blog comment:1dra7/This.....is the Apocalypse....in progress.../@comment-3331075-20120126135231/@comment-1874924-20120127060751

The reason it could and would affect other countries is because it's not a U.S. law, it's an international treaty. In the U.S., the President signs treaties, but the Senate has to ratify them before the U.S. can be bound by them. Once a treaty is ratified, it's co-equal to the Constitution, but a nation that signs a treaty can withdraw from it at any time.