Arthur:

"In terms of the narrower concerns of foreign policy, let me make clear that in my view, there is and ought to be a very simple, "bright line" test: if another nation or a terrorist group attacks us or threatens to attack us in a way that is indisputably and provably serious and capable of being actualized in the near future, we must confront it and eliminate the threat, to whatever extent we can. Such a test validates our invasion of Afghanistan, but it most certainly does not support the invasion of Iraq. Iraq was not a threat to us, three years ago or in the foreseeable future, and our leaders knew it....read on