Throughout the war a difference of opinion existed in Allied councils as to whether it was better to concentrate all efforts in the western sphere of operations, or to assail the Central Powers in the Near East as well, where the accession of Turkey (and later of Bulgaria) threatened to put the resources of all southeastern Europe under Teutonic control, and even opened a gateway into Asia. Such a division of effort was suggested not only by the necessity of protecting the Suez Canal, Egypt, and Mesopotamia, but by the difficulty of breaking the stalemate on the western front, and by the opportunity that would be offered of utilizing Allied control of sea communications. Furthermore, the Allies had a margin of predreadnoughts and cruisers ready for action and of no obvious value elsewhere. On November 3, 1914, three days after Turkey entered the war, an Allied naval force that had been watching off the Dardanelles engaged the outer forts in a 10-minute bombardment, of no significance save perhaps as a warning to the Turks of trouble later on. In the same month the First Lord of the British Admiralty, Mr. Winston Churchill, proposed an attack on the Straits as "an ideal method of defending Egypt"; but it was not seriously considered until, on January 2, Russia sent an urgent appeal for a diversion to relieve her forces in the Caucasus. Lord Kitchener, the British Minister of War, answered favorably, but, feeling that he had no troops to spare, turned the solution over to the Navy. From the first the decision was influenced by political considerations. Russia needed assurance of Allied solidarity--and it is significant that in February Lord Grey announced that England no longer opposed Russia's ambition to control Constantinople. Nine-tenths of Russia's exports were blocked by the closing of the Straits; their reopening would afford not only access to her vast stores of foodstuffs, but an entry--infinitely more convenient than Vladivostok or Archangel--for munitions and essential supplies. The Balkan States were wavering. In Turkey there was a strong neutral or pro-Ally sentiment. Victory would give an enormous material advantage, help Russia in the impending German drive on her southwestern frontier, and bolster Allied prestige throughout the eastern world. Faced with the problem, the Admiralty sent an inquiry to Admiral Carden, in command on the scene, as to the practicability of forcing the Dardanelles by the use of ships alone, assuming that old ships would be employed, and "that the importance of the results would justify severe loss." He replied on January 5: "I do not think the Dardanelles can be rushed, but they might be forced by extended operations with a large number of ships." In answer to further inquiries, accompanied by not altogether warranted assurance from the First Lord that "High authorities here concur in your opinion," Admiral Carden outlined four successive operations: