In 1940, during World War II, Romania agreed to an ultimatum and ceded the region to the Soviet Union, which organized it into the Moldavian SSR. The Soviets began a campaign to promote the Moldovan identity overt that of the rest of Romanian speakers, taking advantage of the incomplete integration of the Bessarabia into the interwar Romania (see also Moldovenism). The official Soviet policy also stated that Romanian and Moldovan were two different languages and, to emphasize this distinction, Moldovan had to be written in a new Cyrillic alphabet (the Moldovan Cyrillic alphabet) based on the Russian Cyrillic, rather than the older Romanian Cyrillic that ceased to be used in the 19th century in the Romanian Old Kingdom and in 1917 in Bessarabia.