That this thread could degenerate into the same style as schoolyard bickering, is really alarming.
The battle is against the common enemy of terrorism; it's perpetrators and patrons.
It is not about who has done what, doing what or will do what. It is not about individual interpretation of history or the events that have created the situation today.
It is about the opportunity to unify and combine the resources of the world to engage the threat of terrorism, to whoever, from whoever. It is about an opportunity to unify and combine diverse peoples, religions and politics in the benefit of a common cause and good.
There are people already putting their lives on the line. It is about millions more, who might be asked to do the same. It is about a horror that most normal people hoped would never arrive.
This is not a one nation at war, it is all of us with a common stake in the cause and the outcome. It is about freedom, it is about democracy. It is about maintaining civilisation as we have known it to this time.