Whether or not Sadam Hussein had the weapons of mass destruction, most opponents of the war agreed that in principle removing a head of state by force should be possible, if he was a great enough thread to world peace. Currently the head of state that is the greatest thread to human welfare on this planet is the Pope. Removing him from power shouldn't take the American army longer then a few minutes. One daisy cutter should do the job.
So far, about twenty million people have died of AIDS. 42 million people are infected. Correct information about how AIDS is transmitted and access to cheap condoms could have saved most of these people. If no action is taken, 70 million people will die in the next 15 years. This is not only a human cathastrophy of an unheard scale, it also threathens the security of the world. Even the Bush administration agrees.
But the Vatican seemingly doesn't. Telling people not to used condoms is really terrible in a situation where 70 million lives are at stake. Telling them that condoms don't protect and might even cause aids, is downright murderous. The Vatican obviously is a greater thread to world peace then Iraq ever was, so the justification of attacking it should be proportional greater. And it doesn't take a large army either. One daisy cutter really should do the trick. Rebuilding the tiny country as a democracy should not be that hard either, though adding it to Italy would be easier.
Seriously though. Where is the difference between Osama bin Laden calling the faithfull to kill people from the West with arms or the Pope calling the faithfull to kill their own with a virus?