More textMapUS aircraft carrier Essex during the blockade
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24 October. The day before JFK had made his quarantine order
enforceable as of 14:00.
 

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He had chosen a "defensive quarantine", an option softer than total blockade which was an act of war according to the UN Charter. Quarantine, a concept listed in the OAS pact and less drastic than blockade, did not mean total isolation of the enemy nation.

Blockade

Kennedy quarantine order
October 23, 1962. JFK signing the quarantine order in the Oval Office
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