The Kennebunkport Warning predicted an imminent false flag attack.

"Massive evidence has come to our attention which shows that the backers, controllers, and allies of Vice President Dick Cheney are determined to orchestrate and manufacture a new 9/11 terror incident, and/or a new Gulf of Tonkin war provocation over the coming weeks and months. Such events would be used by the Bush administration as a pretext for launching an aggressive war against Iran, quite possibly with nuclear weapons, and for imposing a regime of martial law here in the United States..."
http://www.911blogger.com/node/10905

Unsurprisingly, it caused much controversy.

It appeared on 25th August 2007 at the Kennebunkport peace protest, and was posted online two days later. On September 5th 2007 there were news articles like these:

"On Aug. 30, a B-52 bomber took off from Minot Air Force base in North Dakota with between five and six nuclear warheads.."
http://thelede.blogs.nytimes.com/2007/09/05/loose-nukes-warheads-in-the-sky/

“Nothing like this has ever been reported before and we have been assured for decades that it was impossible..”
“..absolutely inexcusable..”