ITALY DECLARES WAR ON BRITAIN AND FRANCE. Hostilities to begin at midnight. CANADA DECLARES WAR ON ITALY. French Government leaves Paris for Tours, on river Loire.
Mediterranean: 6 British submarines leave Malta for operations off Italian harbours and naval bases. Italian torpedo boats and destroyers sink subs Odin, Grampus and Orpheus (June 13, 16 and 27, resp.).
USA: Roosevelt speaks at University of Virginia: ‘On this tenth day of June 1940 the hand that held the dagger has struck it in the back of its neighbor.’