France
Rommel captures remnants of French IX Corps and British 51st Highland Division at St.Valery-en-Caux, near Le Havre. Germans reach the Marne and cross at Chateau-Thierry. Fall of Rheims.
North Africa
British capture 62 Italians in skirmish on Egyptian border.
Politics
Egypt breaks off diplomatic relations with Italy. Turkey breaks off commercial relations with Italy. Britain and France sign non-aggression treaties with Thailand. Thai-Japanese Treaty of Friendship (to run for 5 years).
China
Japanese capture Ichang, vital port and air base on river Yangtse, east of Chungking.
Home Fronts
Italy: Vatican newspaper Osservatore Romano, banned for publishing British and French war Communiqués (ban lifted June 13, when editors agree not to publish war news).