1. it became a problem for the USA because in order to 'protect' Cuba, the USSR supplied arms to Cuba which posed a security threat to USA
4. it was resolved but left the aftermath of politicians thinking Kennedy was weak and he'd been humiliated, sacked in 1964, the telephone hotline was set up between the White House in Washington D.C and the Kremlin in Moscow , partial test ban treaty, nuclear non proliferation treaty , the SALT talks began and in 1963 USA sold grain to USSR