Flanders met with President Roosevelt on several occasions. He felt that Roosevelt and his advisors did not heed Secretary of the Navy, Frank Knox's warning that it was "easily possible that hostilities would be initiated by a surprise attack upon the fleet or the Naval Base at Pearl Harbor." He further faulted the president for failing to recognize the growing threat of Communism in China. In Flanders's opinion, he sold out on Mongolia, Nationalist China and Central Europe to Communist powers at the 1943 Tehran Conference. Flanders recognized the president's political genius and leadership skills, but deplored his advocacy of raising taxes. He characterized the Roosevelt philosophy as one where re-employment "must come from Government—not private—action." Flanders felt that large social programs were an ineffective approach to solve national problems.