History of Cuba 20 April, the brigade surrendered and was publicly interrogated before being sent back to the US. Recently inaugurated president John F. Kennedy assumed full responsibility for the operation, even though he had vetoed the reinforcements requested during the battle. The invasion helped further build popular support for the new Cuban government. The Kennedy administration thereafter began Operation Mongoose, a covert CIA campaign of sabotage against Cuba, including the arming of millitant groups, sabotage of Cuban infrastructure, and plots to assassinate Castro. All this reinforced Castro's distrust of the US, and set the stage for the Cuban missile crisis. Tensions between
Cuban Missile Crisis wrote, "too young, intellectual, not prepared well for decision making in crisis situations... too intelligent and too weak." US covert operations against Cuba continued in 1961 with the unsuccessful Operation Mongoose. In addition, Khrushchev's impression of Kennedy's weaknesses was confirmed by the President's response during the Berlin Crisis of 1961, particularly to the building of the Berlin Wall. Speaking to Soviet officials in the aftermath of the crisis, Khrushchev asserted, "I know for certain that Kennedy doesn't have a strong background, nor, generally speaking, does he have the courage to stand up to a serious challenge." He also told his