Q; "What's America's longest war?"

"When you ask people, "What's America's longest war?" they usually answer "Vietnam" or amend that to "Afghanistan," but it's neither.
    "America's longest war is the war on drugs.
    "[Almost fifty] years and counting.... And drugs are more plentiful, more potent, and less expensive than ever."
          ~ Dan Winslow, from his book The Cartel