In 1958, Fidel Castro was near the end of a yearslong battle to overthrow Cuban President Fulgencio Batista. Confident of soon seizing power, Castro was already looking ahead.What he saw was a clash with a much larger foe.“Once this war is over, I will start what for me is a much longer and bigger war, the war I am going to wage against the Americans,” Castro confided to a friend. “I realize this will be my true destiny.”Also Read: Why the CIA o…