What did the Soviets do between June 27 1948 and may 12 1949?

Between June 27, 1948, and May 12, 1949, the Soviets blockaded West Berlin in an effort to force the Allies out of the city following the introduction of a new currency in West Germany. This blockade restricted all ground access to West Berlin, prompting the United States and its allies to initiate the Berlin Airlift, which supplied the city with food and other essentials via air. The blockade lasted nearly a year and was a significant event in the early Cold War, highlighting the tensions between the Soviet Union and the Western Allies. The blockade was lifted on May 12, 1949, following the success of the airlift and increasing pressure on the Soviets.