Although the U.S. had a strained relationship with the USSR in the 1920s, relations were normalized in 1933. The original terms of the Lend-Lease loan were amended towards the Soviets, to be put in line with British terms. The United States would now expect interest with the repayment from the Soviets, following the initiation of the Operation Barbarossa, at the end of the war—the United States were not looking to support any "postwar Soviet reconstruction efforts", which eventually manifested into the Molotov Plan. At the Tehran conference, Stalin judged Roosevelt to be a "lightweight compared to the more formidable Churchill". During the meetings from 1943 to 1945, there were disputes over the growing list of demands from the USSR.