Cuban Missile Crisis forces. Kennedy met with members of EXCOMM and other top advisers throughout October 21, considering two remaining options: an air strike primarily against the Cuban missile bases or a naval blockade of Cuba. A full-scale invasion was not the administration's first option. McNamara supported the naval blockade as a strong but limited military action that left the US in control. The term "blockade" was problematic. According to international law, a blockade is an act of war, but the Kennedy administration did not think that the Soviets would be provoked to attack by a mere blockade. Additionally, legal experts at the
Cuban Missile Crisis the balance of power. It would have appeared to, and appearances contribute to reality." On October 18, Kennedy met with Soviet Minister of Foreign Affairs, Andrei Gromyko, who claimed the weapons were for defensive purposes only. Not wanting to expose what he already knew and to avoid panicking the American public, Kennedy did not reveal that he was already aware of the missile buildup. By October 19, frequent U-2 spy flights showed four operational sites. On the night of October 19 at 23:56 a helicopter from USS Essex CVS-9 squadron HSS-2 crashed into the Gulf of Mexico. Lt. Cmdr. James