You can make a case for past civilization on Mars with enough spin and speculation. I refuse to believe an American president allowed Pearl Harbor to happen. I will never believe it.
The operations in Afghanistan are not new and in all liklihood have also been war gamed. The military must always prepare for action against anticipated enemies.
The on-going arguments surrounding the decryption of the famous "East Winds Rain" transmission will continue for many generations. Did FDR "allow" Pearl Harbor to happen by ignoring the strategic warnings? Maybe. But given the America First movement and the "peace above all" atmosphere is the US after more two years of war in Europe suggests that maybe FDR knew that we needed to come in on the side of "Truth, Justice and the American way" by whatever means possible.
What would the world be like today had we allowed Germany the time to consolidate its holdings, complete the "Final Solution" and develop the jet fighters, bombers, and missiles to defend the Fatherland. Might the mushroom clouds have occurred over Washington D.C., NYC and Boston????