On October 22, 1962, the Cuban Missile Crisis came to public attention when President John F. Kennedy announced that spy planes discovered Soviet missile bases in Cuba. Kennedy announced a naval blockade of Cuba, and ordered the USSR to dismantle the bases. The Soviets did not respond, so Kennedy threatened to invade. The Soviets countered with a challenge: The U.S. should remove their missiles in Turkey. Negotiations became secret, and by October 28, the crisis was resolved.