The scourge of nuclear weapons proliferation is threatens to incur death and destruction at a scale less than during the cold war, but with a much greater probability. Iran is obviously pursuing a nuclear weapons development, while the world plays nice. Because of the world response to the heavy-handed treatment of Iraq by Bush, we must now ignore the elephant in the room. Does anyone doubt that Saddam would by now, in 2007, would have begun his own development of nuclear weaponry given its trajectory in his longtime arch-enemy Iran? And once the program is successful, the option of the concerned world to reverse this proliferation is closed - witness the situation in the otherwise backward state of North Korea.
So the spirit of intervention to prevent proliferation in the Middle East was correct, but the method by Bush was ham-fisted, and may end up doing more harm than good.
Perhaps we should try applying the model that has proved very successful in the arena of disease prevention. That is, treat nuclear weapons as one does disease; find its causes and its vectors, then institutionalize protocols in high risk areas that will prevent the spread of the disease.