The Soviet leader did so, in gracious recognition that Kennedy was under even more intense pressure than he was. In both cases a back-channel communication via Robert Kennedy was critical. And in both cases Khrushchev, in withdrawing his tanks and later his missiles, achieved his own objectives in exchange from Kennedy: the removal of U.S. threats to bulldoze the Wall and to invade Cuba, and the withdrawal of U.S. missiles from Turkey and
