Yes, lots of religious people do abhor war, but I see plenty of non religious people as well, and at least many religious people who favour war as an option as hate it.
I don't see how you can know whethyer Bush & Blair are true in their faith. Forgive me for saying this but it seems more as if you dislike them a lot, and therefore believe they do everything out of self interest.
I don't know you're wrong, but you can't be as right as you think you are.
GW Bush is really dumb. I just don't see how he could stand up to the sort of scrutiny he is has been under for decades without letting the mask fall.
Blair is a lot smarter, though that's not hard, but again the deceit I interpret from Blair is that he's trying to hide his faith, not claim it for votes.
I also believe that nearly everyone, including Bush & Blair tries to do what is right in their own eyes nearly all the time. Their ethics may be different to yours (and mine), and they know different things than you do, and are not always honest about their reasons, but that does'nt make them bad people, perhaps incompetent, but to be "bad" you have to believe what you are doing is wrong by your own standard.
I may be naive about politics in your eyes, but you are cynical and making assertions which you cannot possibly know to be the truth.
Blair did know it was going to cost him politically. Wars always have such a cost, and Blair didn't get to be leader of his party without a good model od how it's members react. He knew they wouldn't like the idea of war, and he knows that many of them assume anything America does is bad.
Thatcher took damage from the Falklands over the rest of her career. Yes there was a blip in the polls, but that also tracks the growth of the economy rather better. Also she could not have reliably predicted the persistent self damagging stupidity of the left over the war. Go look up what the Labour proposal was. You won't believe it from me.
I blame everyone for the corruptiion in the UN. No one forced the Sec.Gen to ensure his son got rich from it.
The structure of the UN means that people from corrupt countries have serious positions, and the grown up nations put people in there who are easily swayed.
In a very narrow sense you are right that the UN was not set up to encourage corruption, but the majority of it's members see it as a way of giving a friend of the ruling clique the chance to get rich. They will resist any change, and have the combined power to stop any meaningful reform.
There is no solution to this I can see which is a terrible thing as ever more flaky countries get nukes.