"He won't wait for approval. And who's approval would we need the UN's?"
Let the b@stards shriek for all the good it will do them.
I believe if Bush had Intel that said another country was preparing to launch on the US, he would give a selected team a few hours to investigate it and if they can back and agreed with the assessment, nothing, nobody or no organization would stand in his way when it comes to protecting us. He knows if he did nothing, he would then be the president of a devastated country.