In fact there was a compelling reason for him to make this statement, which was that the American government wanted him to. The USA of course was still neutral at this stage – Churchill’s initial draft included a reference, which he later deleted by hand, to its ‘strange detachment’ in the face of the Nazi menace. However, President Roosevelt made clear via secret channels that he wanted a commitment from Britain that even if she were defeated she would not surrender her fleet but would send it to South Africa, Australia, Canada and other parts of the Empire. If this were done, American intervention could be expected to follow quickly, he promised. So Churchill was giving him the message that he wanted to hear – a message that is now largely forgotten.
As a political courtesy, Churchill called the White House and inquired if the president wanted to look over a draft of his Fulton speech. The White House replied that Under Secretary of State Dean Acheson would instead call at the British embassy. Lester Pearson, the Canadian ambassador, had already told Churchill that Acheson not only had a sound diplomatic head but also had a keen ear for the elegant phrase.
Few failed to recognise Churchill's part in Britain's survival and victory. But after six years of war, people wanted more than just a return to the old order. They wanted reform and reconstruction of Britain. On 26 July 1945, Churchill learned that he and the Unionists (Conservatives) had been rejected by the people. Labour, under Clement Attlee, would govern Britain in the immediate post-war world.
Such a moment came in 1911, when Churchill was serving as Home Secretary in the cabinet of Prime Minister Herbert Asquith. Appointed at age thirty-five, he was the second-youngest Home Secretary in history. This post kept Churchill preoccupied with domestic affairs with the never-ending troubles in Ireland. When the navy in 1909 pressed for six new battleships in response to the German buildup, Churchill joined the cabinet opponents in trying to hold the number to four. With typical wit, Churchill described the outcome: “In the end a curious and characteristic solution was reached. 

It was an experience of great interest to me to meet Premier Stalin ... It is very fortunate for Russia in her agony to have this great rugged war chief at her head. He is a man of massive outstanding personality, suited to the sombre and stormy times in which his life has been cast; a man of inexhaustible courage and will-power and a man direct and even blunt in speech, which, having been brought up in the House of Commons, I do not mind at all, especially when I have something to say of my own. Above all, he is a man with that saving sense of humour which is of high importance to all men and all nations, but particularly to great men and great nations. Stalin also left upon me the impression of a deep, cool wisdom and a complete absence of illusions of any kind. I believe I made him feel that we were good and faithful comrades in this war – but that, after all, is a matter which deeds not words will prove.
Churchill persevered and worked on his pronunciation diligently, rehearsing phrases such as “The Spanish ships I cannot see for they are not in sight”. He tried to avoid words beginning and ending with an ‘s’, but when he did, his pronunciation became a part of his intonation and oratory, later mispronouncing “Nazis” as “Narzees” to great effect and advantage.
While largely unstated, one of Churchill’s major concerns was limiting Soviet territorial gains in Europe. Having an eye toward the postwar world, he did not want Stalin in control of formerly democratic nations. However, geopolitics required further cooperation with his unlikely ally, and Churchill met Roosevelt for the last time in Stalin’s domain—Yalta in the Crimea, in February 1945. Victory in Europe was visible by then, though with more hard fighting to come in the Pacific. Roosevelt’s premature death in April ended the original Big Three.

Churchill Speeches