In World War II which began on September 1, 1939, Turkey preferred to remain neutral based on its experiences in the First World War. At the beginning of the war, it tried to follow a policy of balance among the great states by preserving its territorial integrity. Turkey, which wanted to maintain a peaceful relationship especially with England and Soviet Russia, attempted to make an agreement with both states when the war started. England approached this situation moderately; however, since Soviet Russia wanted to have a say in the Turkish Straits, it did not respond positively to Turkey's request for an agreement. In 1941, when Germany invaded Bulgaria and approached the Turkish border, the balances in the war changed. Because of the possibility of Germany to reach Middle East oil through Turkey, and Soviet Russia to the possibility of Germany to seize the Straits, England turned their focus to this region and the possibility of Turkey entering the war arose. Turkey, especially after 1942, was heavily exposed to the pressure of England to enter the war. Rauf Bey, who was appointed as the London Ambassador in the same year, was very important in this sense. In the sources related to the World War II, Rauf Bey's activities in the ambassadorship are mostly not included. However, it was seen in the documents obtained in the research conducted at The National Archives in London. During his duty, Rauf Bey received information from the political circles in London about the course of the war and tried to be informed about the decisions taken in favor of or against Turkey. He shared all this information and decisions with the Turkish Government as quickly as possible. This information given by him has been very effective in determining the foreign policy of the government. Rauf Bey, especially in his meetings with Prime Minister Churchill and Foreign Minister Eden, frequently referred to the British war material aid to Turkey. When he realized that England was not very sincere about this aid, he warned the Turkish Government to be cautious against the British. As a result of his warnings, Turkey suspended the issue of entering the war on the side of England for a long time, despite the pressures.