In the introduction to the first post-9/11 National Security Strategy released by the White House in the Autumn of 2001, before going on to describe a policy agenda of violence, hatred and perpetual war, Bush made it eminently clear that under his regime “as a matter of common sense and self-defence, America will act against . . . emerging threats before they are fully formed.” This is of course an underpinning theme of the “Project for a New American Century” (PNAC)'s longstanding viewpoint on strategy, but as one writer presciently pointed out, “one problem with this view lies in the risk of a government manufacturing a case for a pre-emptive war when it actually has other motives for going to war.”
He has said it so much better than I ever could. Peace to you.