Two answers required. The collapse of exports to one of these two countries caused the other to develop urban agriculture known as organoponics. One of these countries adopted repressive policies from the other during the “Grey Years.” One of these countries introduced rationing after losing aid from the other as part of the “Special (15[2])Period in Peacetime.” A leader of one of these countries announced its ideological alignment with the other only after repelling the expatriate (*) Brigade 2506. One of these country’s shipments of R-12’s to the other became the subject of a naval “quarantine” when bases were (10[1])spotted by a (10[1])U-2 spy plane. One of these countries invested in the other’s first-strike capabilities after the latter repelled the Bay of Pigs invasion. For 10 points, name these two socialist countries that allied under Nikita Khrushchev and Fidel Castro. ■END■