Russia teeters on the brink of collapse, spoiling for a battle to end all wars. All it needs? One thin excuse. World War I began with the assassination of Archduke Ferdinand. World War II launched with the invasion of Poland. As for Russia's invasion of Ukraine... A Russian flyby of an American CMV-22 Osprey tiltrotor goes desperately wrong over the North Sea. Will the tipping point for World War III break the moment...