On what issues did stalin, roosevelt and churchill disagree during the victory in europe and the pacific

They came together to discuss how they should beat Germany in the war. They disagreed just on that, how they were about to do it. Stalin and Roosevelt agreed that the US and the British should attack from the west, therefore forcing them to divide the troops. However, Churchill disagreed, saying that they needed more equipment,better trained soldiers and more landing craft then they should attack east west and south which FDR agreed with