"In September 1943, Iran declared war on Germany, thus qualifying for membership in the United Nations (UN). In November at the Tehran Conference, President Franklin D. Roosevelt, Prime Minister Winston Churchill, and Prime Minister Josef Stalin reaffirmed a commitment to Iran's independence and territorial integrity and a willingness to extend economic assistance to Iran."
1943 was an important year for Iran. Maybe there's something here.
http://countrystudies.us/iran/16.htm
"In September 1943, Iran declared war on Germany, thus qualifying for membership in the United Nations (UN). In November at the Tehran Conference, President Franklin D. Roosevelt, Prime Minister Winston Churchill, and Prime Minister Josef Stalin reaffirmed a commitment to Iran's independence and territorial integrity and a willingness to extend economic assistance to Iran."
1943 was an important year for Iran. Maybe there's something here.