The shock of rejection by the nation fell heavily on Churchill. Indeed, though he accepted the role of leader of the parliamentary opposition, he was never wholly at home in it. The economic and social questions that dominated domestic politics were not at the centre of his interests. Nor, with his imperial vision, could he approve of what he called Labour’s policy of “scuttle,” as evidenced in the granting of independence to India and Burma (though he did not vote against the necessary legislation). But in foreign policy a broad identity of view persisted between the front benches, and this was the area to which Churchill primarily devoted himself. On March 5, 1946, at Fulton, Missouri, he enunciated, in the presence of President Truman, the two central themes of his postwar view of the world: the need for Britain and the United States to unite as guardians of the peace against the menace of Soviet Communism, which had brought down an “iron curtain” across the face of Europe; and with equal fervour he emerged as an advocate of European union. At Zürich, on September 19, 1946, he urged the formation of “a council of Europe” and himself attended the first assembly of the council at Strasbourg in 1949. Meanwhile, he busied himself with his great history, The Second World War, six volumes (1948–53).
London: Winston S. Churchill: His Memoirs and His Speeches [discs numbered XL.1 to XL.12, with a side number reference from 1 to 24; each side also includes what appears to be a master Tape Reference running from ARL 6426 to ARL 6449. The London records differ from the Decca records in that London disc XL.1 includes side numbers 1 and 24, disc XL.2 includes side numbers 2 and 23, and so on; consequently, the speeches appearing on, say, WSC 3 do not correspond to those appearing on XL.3]
Nevertheless, our thankfulness at the escape of our Army and so many men, whose loved ones have passed through an agonizing week, must not blind us to the fact that what has happened in France and Belgium is a colossal military disaster. The French Army has been weakened, the Belgian Army has been lost, a large part of those fortified lines upon which so much faith had been reposed is gone, many valuable mining districts and factories have passed into the enemy’s possession, the whole of the Channel ports are in his hands, with all the tragic consequences that follow from that, and we must expect another blow to be struck almost immediately at us or at France. We are told that Herr Hitler has a plan for invading the British Isles. This has often been thought of before. When Napoleon lay at Boulogne for a year with his flat-bottomed boats and his Grand Army, he was told by someone. “There are bitter weeds in England.” There are certainly a great many more of them since the British Expeditionary Force returned.

Winston Churchill Speech WW2