Passage: Schlesinger, a historian and adviser to Kennedy, told National Public Radio in an interview on October 16, 2002 that Castro did not want the missiles, but Khrushchev pressured Castro to accept them. Castro was not completely happy with the idea, but the Cuban National Directorate of the Revolution accepted them, both to protect Cuba against US attack and to aid the Soviet Union. Schlesinger believed that when the missiles were withdrawn, Castro was more angry with Khrushchev than with Kennedy because Khrushchev had not consulted Castro before deciding to remove them. Although Castro was infuriated by Khrushchev, he planned on striking the US with remaining missiles if an invasion of the island occurred.In early 1992, it was confirmed that Soviet forces in Cuba had, when the crisis broke, already received tactical nuclear warheads for their artillery rockets and Il-28 bombers. Castro stated that he would have recommended their use if the US invaded despite Cuba being destroyed.Arguably, the most dangerous moment in the crisis was not recognized until the Cuban Missile Crisis Havana conference, in October 2002. Attended by many of the veterans of the crisis, they all learned that on October 27, 1962, USS Beale had tracked and dropped signaling depth charges (the size of hand grenades) on B-59, a Soviet Project 641 (NATO designation Foxtrot) submarine. Unknown to the US, it was armed with a 15-kiloton nuclear torpedo. Running out of air, the Soviet submarine was surrounded by American warships and desperately needed to surface. An argument broke out among three officers aboard B-59, including submarine captain Valentin Savitsky, political officer Ivan Semonovich Maslennikov, and Deputy brigade commander Captain 2nd rank (US Navy Commander rank equivalent) Vasily Arkhipov. An exhausted Savitsky became furious and ordered that the nuclear torpedo on board be made combat ready. Accounts differ about whether Arkhipov convinced Savitsky not to make the attack or whether Savitsky himself finally concluded that the...

Question: Through what media channel was it revealed that Krushchev pressured Castro into accepting missiles?
National Public Radio