http://www.onwar.com/chrono/1941/apr41/f11apr41.htm
Tobruk under siege
Friday, April 11, 1941 www.onwar.com
North Africa... The isolation of Tobruk is now complete, all the remainder of the Allied force having retreated to the Egyptian border. The German attack on Tobruk continues but the combination of Australian infantry and British artillery defending proves too strong and they fail to break through.
In the Balkans... The Germans repeat their attacks, with growing strength, through the Monastir Gap route into Greece from Yugoslavia. Meanwile, the Italian Second Army, led by General Ambrosio, begins a cautious advance from the Triest area toward Ljubljana but Weich’s forces arrive there first. Other Italian units begin to advance south along the Dalmatian coast. The German 12th Corps also begins to advance over the Romanian border toward Belgrade. The Hungarians also join in with an advance from the Szeged are toward Novi Sad. They are held up more by resistance from Yugoslav civilians than by the Yugoslav army.
From Washington... Roosevelt tells Churchill that the US Navy will extend the American Defense Zone up to the line of 26 degrees West. The Red Sea is declared to be no longer a “combat zone” and under the terms of American law US ships may now carry cargos to ports there including supplies for the British in Egypt.
In Washington... President Roosevelt creates the Office of Price Administrations under the direction of Leon Henderson. It is given the task of controlling prices and profits and balancing civilian and defense needs. This bureau will play an important part in holding back many increases in prices and containing inflation despite the pressures that will develop in the war economy.