The United States, we are told, is the most powerful nation in world history, the sole superpower, winner of the Cold War, the “indispensable nation,” a “hyperpower” that has achieved “full spectrum dominance” and “command of the commons” over all other military forces on Earth. Yet, the United States failed to achieve its objectives in Iraq and Afghanistan, was defeated outright in Vietnam, and since World War II won clear victories only in the first Gulf War of 1991 and in smaller “police actions” in the Dominican Republic in 1965, Grenada in 1983, and Panama in 1989. How can we explain this