India and the US are not in remotely comparable positions geopolitically. Yemen or Pakistan asserting their right to self defense to the UN to justify declaring war on the US would simply be suicide for them, and just another middle eastern country to topple for the US. So the US just informs the UNSC that they are killing Bin Laden on Pakistani soil, and do so in such a way as to give Pakistan plausible justification for not declaring war, since they have no interest in doing so.
If Canada decided that they were going to declare war based on self-defense, before going to the UN, they'd be going to the US and NATO, the most powerful military organizations on Earth. Canada, even just as the US's hat, enjoys the kind of superpower status that India can only fantasize about.
If Canada decided that they were going to declare war based on self-defense, before going to the UN, they'd be going to the US and NATO, the most powerful military organizations on Earth. Canada, even just as the US's hat, enjoys the kind of superpower status that India can only fantasize about.