For Adolf Hitler, no dilemma ever existed in this situation. "Drang nach Osten" (German for "Drive towards the East") remained the order of the day. This culminated, on December 18, in the issuing of 'Directive No. 21 – Case Barbarossa', which opened by saying "the German Armed Forces must be prepared to crush Soviet Russia in a quick campaign before the end of the war against England". Even before the issuing of the directive, the German General Staff had developed detailed plans for a Soviet campaign. On February 3, 1941, the final plan of Operation Barbarossa gained approval, and the attack was scheduled for the middle of May, 1941. However, the events in Greece and Yugoslavia necessitated a delay — to the second half of June.