1941On June 22nd, the Soviet-German war broke out, and British Prime Minister Winston Churchill made a radio speech, announcing that he would provide all possible assistance to the Soviet Union and Qi Xin would work together to fight against the enemy. The US government also issued a statement expressing its willingness to help the Soviet Union. 1941July 3, Stalin delivered a radio speech, indicating that the Soviet patriotic war "will unite with the struggles of people of all countries for independence, democracy and freedom" and form a "United front." The Atlantic Charter expresses the determination to jointly oppose Nazi tyranny and rebuild peace. 1941On September 29th, the Soviet Union, the United States and Britain held a meeting in Moscow and signed an agreement that Britain and the United States provided the Soviet Union with military materials and loans such as airplanes and tanks, and the Soviet Union provided raw materials to Britain and the United States. After Pearl Harbor, the United States officially entered the war, and China also declared war on German, Italian and Japanese. Other countries also declared war on the Axis countries. On February 22, the leaders of the United States and Britain proposed that all countries at war with the Axis countries sign the declaration of alliance. The draft declaration put forward by the United States was revised after consultation with Britain and the Soviet Union, and was sent to the allies by urgent telegram. Twenty-six countries signed the United Nations Declaration in Washington, expressing their support for the purposes and principles of the Atlantic Charter and emphasizing the importance of defeating the common enemy. The signatory countries promised to use all military and economic resources to attack the fascist countries of Germany, Italy and Japan, cooperate with their allies, and not conclude an armistice agreement or a peace treaty with the enemy alone; Other countries that have given material assistance and contributions in the anti-fascist struggle may join this declaration. The signing and publication of the declaration marked the formal establishment of the international anti-fascist alliance. By the end of World War II on August 1945, 52 countries had joined the alliance.