North Africa
Rommel receives orders from Berlin to concentrate Afrika Korps against British at Sollum, leaving Italians to guard Tobruk siege ring.
Air War
Britain: NIGHT ‘BLITZ’ ON BRITISH CITIES ENDS with raid by 111 aircraft on Birmingham and West Midlands; RAF airfields also bombed (3 German aircraft lost).
German fighter-bombers raid Southeast England.
Germany: RAF night raid on Cologne (fires on both banks of Rhine); targets in France and Holland also raided (2 aircraft lost).
Middle East: He 111 planes bomb Habbaniyah (Iraq) causing serious damage.
Neutrals
Bolivia: Government takes over German-owned airline Lloyd Aero Boliviano.
Occupied countries
Denmark: Icelandic Parliament (Althing) issues formal declaration of independence from Denmark. Regent is appointed on June 17.