here here
"The most fundamental conviction that the period of Ike's command in Europe and the Mediterranean imprinted on his mind was the cruelty, wastefulness and stupidity of war. He saw firsthand how war destroyed cities, killed innocent people (in which I would include most of the participating soldiers), wiped out national economies and tore up the structure of civilizations. Its wastefulness cut him to the bone, and its specter never left him." "the general who led the greatest invasion in history privately stressed again and again the value of allies and the futility of attempting something called 'preventative war.'" "We all should wonder as we plunge ahead without allies to prevent wars that never were and never would be." i'm quoting yahoo quoting Cornelius Ryan's book on D-Day, "The Longest Day" quoting john s.d. eisenhower.