cfr.org/articles/soviet-foreign-minister-andrei-gromyko-lies-to-president-john-f-kennedy-the-cuban-missile-crisis-day-three Soviet Foreign Minister Andrei Gromyko Lies to President John F. Kennedy—The Cuban Missile Crisis, Day Three
On the third day of the Cuban missile crisis, Kennedy sat through a two-hour White House meeting with Soviet Foreign Minister Gromyko, who was lying about missiles in Cuba, and never let on that he knew. Kennedy read Gromyko his own September warning that "the gravest issues would arise" if the Soviets armed Cuba.
— via CFR (Council on Foreign Relations)