bɹˈɪtən ænd fɹˈæns dᵻklˈɛɹd wˈɔːɹ ˌɔn dʒˈɜːməni tˈuː dˈeɪz lˈeɪɾɚ, θɹˈiː sɛptˈɛmbɚ nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi nˈaɪn, bɪɡˈɪnɪŋ ðə sˈɛkənd wˈɜːld wˈɔːɹ.
Britain and France declared war on Germany two days later, 3 September 1939, beginning the Second World War.