The Percentages Agreement (also known as the “Naughty Document”) was an agreement between Soviet Prime Minister Joseph Stalin and British Prime Minister Winston Churchill on the division of different European countries into spheres of influence at the Fourth Moscow Conference in 1944. The agreement was published by Churchill. The Soviet Union, Russia or the American side, represented at the meeting of Ambassador Averell Harriman, were never confirmed. In his famous biography of Churchill, Roy Jenkins writes that the agreement proposed “spheres of influence of realpolitik in the Balkans. The [Churchill] report reported that “The Americans would be shocked if they saw how crudely he had said it.”  Historian David Carlton notes in the same way that “[with the October Treaty], a clear, albeit informal, agreement had been reached on the most important point: he had Stalin`s agreement to treat Greece as he sees fit.”  Anthony Eden wrote that he and Churchill had discussed the subject months before the meeting and that “we felt entitled to ask for Soviet support for our policy towards Greece, in exchange for our support for Soviet policy towards Romania.” The British historian Richard Crampton described the agreement with Churchill and Stalin as “famous” in a “capitable” way that divided Eastern Europe into spheres of influence without consulting the peoples concerned.  The British were particularly concerned about the possibility that Stalin might create the largest “Greater Bulgaria” in 1941, when the Germans, along with much of Greek Thrace and Greek Macedonia, attributed Bulgaria after the war.  Greater Bulgaria, created in 1941, had given Bulgaria a coast on the Aegean Sea, and the Soviets most disturbed the British because the Bulgarians remained in the parts of Greece and Yugoslavia they had annexed on the grounds that Bulgaria was now a Soviet ally.  What was even scarier for Churchill was the possibility that the Red Army would head south to Greece and free it, thus putting Britain in front of the fait accompli, to which the eAM was in power.  In a state of despair, on 21 September Eden sent a cable to Sir Archibald Clark Kerr, ambassador to Moscow, to tell him that he hoped “that the Soviet government would not consider it necessary to send Russian troops to part of Greece, except in accordance with Her Majesty`s Government.”  After two anxious days waiting for a Soviet response, foreign Deputy Commissioner Andrei Vysinski Clark Kerr announced on 23 September that the Soviet Union would abide by the Eden-Gusev Agreement of May 1944.  Alongside Greece, Churchill strongly insisted that Bulgaria return to the borders before 1941.
 Churchill was particularly indifferent to the annulment of the 1940 Treaty of Craiova, which had given the Bulgarians southern Dobruja at Romania`s expense.