1 The blockade of Berlin was the result of a situation which developed mainly
as a consequence of decisions made during the war. It was the climax of one
phase of a planned and deliberate attempt by the Russians to force the Western
allies out of Berlin.
4 The Potsdam Agreement consisted of a comparatively short statement of principle
and was not a statute book for the government of Germany. Consequently, co-operation
and good faith on the part of the allies was required in co-ordinated and effective
government of Berlin was to be obtained. Unfortunately, the Russian attitude
5 Owing to this lack of collaboration, the four power control of Berlin was
bound to fail and gradually the administration of the Eastern and Western sectors
of the city grew farther apart until the sectors became virtually two separate
cities with separate city governments and separate police forces. The split
between the two sectors was made complete by the Allied currency reform which
was introduced in June 1948. This was caused by the Soviets refusal to co-operate
and resulted in each sector having a different currency.