
BBC broadcast (“The Russian Enigma”), London, October 1, 1939 ( partial text http://www.churchill-society-london.org.uk/RusnEnig.html, transcript of the "First Month of War" speech https://ww2memories.wordpress.com/2011/09/24/churchills-ww2-speech-to-the-nation-october-1939/).
The Second World War (1939–1945)