Tony Blair likes it to be known that he is a Christian now that it is politically expedient for him to be so. He was not overtly a Christian during the days when he was controlled by Alastair "We don't do God) Campbell. We will never know whether or not he was guided by his Christian principles when he decided to invade Iraq; nevertheless, the decision has been a dire one for Christians who have been living relatively unscathed for 2000 years.
According to a Times news report this morning, Christians face extinction in the country that Bush and Blair tried to transform into a cradle of democracy. They are being persecuted and driven out of their ancient homeland by various factions. I wouldn't blame the various groups who are responsible for the persecution, but I would blame those who deliberately invaded Iraq for their own narrow purposes and de-stablized a society that was functioning well.
I am not even sure that mr Blair even knew that he had fellow Christians living in Iraq, or if he knew he didn't care. He was probably far too self-absorbed to concern himself about such matters.
He now has the advantage of secretly confessing his sins to God and being absolved.