It strikes me that the current buildup and increased tensions would be a perfect setup for a future president to do so.
edit: Here is the relevant part
Obviously, we are not at that last point. However, if we have a financial crisis, no money to support the military and our military could collapse in a very short period of time.Thousands of tanks would be transported in huge trucks so they would be in place where they were needed when the war began.
The United States would have missiles in Europe which carried an atomic bomb. However, the United States would be committed to many far-reaching alliances and would withdraw its missiles to satisfy the Soviet Union. Then the war would begin and people would "die like flies". The military power of the Soviet Union at this time would be much greater than the United States.
