Power of Decision is a short film obtained by the National Security Archive at George Washington University. This four-minute preview is only a part of the 12-minute video you can watch at the link.
Washington, D.C., February 19, 2011 - "The Power of Decision" may be the first (and perhaps the only) U.S. government film depicting the Cold War nightmare of a U.S.-Soviet nuclear conflict. The U.S. Air Force produced it during 1956-1957 at the request of the Strategic Air Command. Unseen for years and made public for the first time by the National Security Archive, the film depicts the U.S. Air Force's implementation of war plan "Quick Strike" in response to a Soviet surprise attack against the United States and European and East Asian allies. By the end of the film, after the Air Force launches a massive bomber-missile "double-punch," millions of Americans, Russians, Europeans, and Japanese are dead.
In this scenario, the "success" of a nuclear war was defined as not having the will of the enemy imposed on the US, despite millions of citizens killed. Link -via Metafilter