British suggestion of Anglo-American action to prevent Japanese plan to acquire military bases in French Indochina; President Roosevelt’s exchange of messages with Japanese Prime Minister Konoye; Japanese demand for French agreement to bases in southern Indochina; President Roosevelt’s request to Marshal Petain for dilatory reply to Japanese demand (July 16); French submission to Japanese demand respecting southern Indochina (July 21); American attitude toward Japanese advance in Indochina (July 24); freezing of Japanese assets in the United States (July 26); British suggestion of Anglo-American warning to Japan concerning Japanese demands on Thailand (August 2); Thai request for purchase of military supplies sympathetically considered by Secretary of State (August 18)