December 7, 2011
            
            
                            by Rupert Colley
            
            Seventy years ago, on  December 7, 1941, Japan  launched a surprise attack on the United States.  In just two hours it crippled a large part of  the U.S. fleet docked in Pearl Harbor and, in one swift stroke, forever  destroyed U.S. isolationism, unified the country for war, and made the conflicts  raging in Europe, Asia, and Africa one truly global war. 
The U.S. may have been expecting war but the attack  on Pearl Harbor took it by surprise.  Yet eleven months before, one voice predicted  such a possibility.  On January 27, 1941,  the U.S. ambassador in Japan, Joseph Grew, cabled the White House  warning that the Japanese might “attempt  a surprise attack on Pearl Harbor using all  their military facilities.” 
As 1941 wore on, the  likelihood of war became more apparent but the U.S.  ignored Grew’s prediction, believing that conflict, if it came, would either  start in the U.S.-controlled Philippines  or the Dutch or British possessions in Southeast Asia.