Answer:
The basis for President Kennedy's demand that the missiles be removed from Cuba was that these missiles posed a very serious threat to international peace and security.
Step-by-step explanation:
In October 1962, the confrontation between the United States and the Soviet Union put the world on the verge of a nuclear conflict. US reconnaissance planes have discovered medium-range Soviet missiles stationed in Cuba.
On October 22, President John Kennedy denounced the existence of Russian missiles in Central America. "These ramps should have no other purpose than the nuclear attack on the Western world," he said.
For him, Cuba's transformation into a strategic base, with the installation of weapons of mass destruction, posed a threat to the peace and security of the American continent. "Neither the United States nor the international community will deceive and accept this threat," he warned.
On the same day, the US decreed a naval blockade against the island of Fidel Castro and gave an ultimatum to the USSR. Kennedy demanded from the head of state Nikita Khruchov the immediate dismantling of ramps, the withdrawal of the missiles and the resignation of the installation of new offensive weapons in Cuba. Kennedy also warned that if the blockade failed, the island would be invaded.