Article continues below advertisementDonald Trump made a major blunder while giving a speech at the American Cornerstone Institute Founder's Dinner on Saturday, September 20.In a continued effort to win the Nobel Peace Prize, the president claimed he's helped end several wars - including one that never actually occurred.Article continues below advertisementSource: megaDonald Trump bragged about ending a war between Cambodia and Armenia, even though trouble never occurred between the countries."Cambodia and Armenia.