Stalin directed the Red Army to move rapidly in a broad front into Germany because he did not believe the Western Allies would hand over territory they occupied, while he made capturing Berlin the overriding objective. After successfully capturing Eastern Prussia, three Red Army fronts converged on the heart of eastern Germany, and the Battle of the Oder-Neisse put the Soviets at the virtual gates of Berlin. By April 24 elements of two Soviet fronts had encircled Berlin. On April 20 Zhukov's 1st Belorussian Front had begun a massive shelling of Berlin that would not end until the city's surrender. On 30 April 1945 Hitler and Eva Braun committed suicide, after which Soviet forces found their remains, which had been burned at Hitler's directive. Remaining German forces officially surrendered unconditionally on 7 May 1945. Some historians argue that Stalin delayed the last final push for Berlin by two months in order to capture other areas for political reasons, which they argue gave the Wehrmacht time to prepare and increased Soviet casualties (which exceeded 400,000); other historians contest this account.