cuban missile caused tension .
It was the Cuban Missile crisis which made great tension between the USSR(Now called Russian Republic) and the United States. As Cuba was very close to Florida, Kennedy was worried that Russia was shipping nuclear warheads and missiles into Cuba. I hope this help!
In October 1962, the Cuban Missile Crisis arose when the U.S. discovered Soviet nuclear missiles in Cuba, leading President Kennedy to impose a naval blockade. The situation escalated but was resolved through secret negotiations, resulting in the withdrawal of missiles from both Cuba and Turkey. This crisis highlighted the importance of diplomatic communication in preventing nuclear conflict.
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