As War Prime Minister Churchill was tireless in his refusal to surrender Britain to Germany. His now famous speeches were an inspiration to British people to stand firm in the face of adversity. His strong relationship with Roosevelt led to an influx of American supplies to support the war effort. He also maintained an alliance with Stalin following Germany’s invasion of Russia in 1941. 

Here we see the significance of Churchill’s remark that he was confident that Britain could continue the war for years, ‘if necessary alone’. At this point the French were still in the war, so the hint that they might drop out was alarming to many. Churchill’s warning was timely and necessary but, by the same token, the concern that it generated was also wholly understandable. It may well be true that millions of people were, at the same time, galvanised and invigorated by the speech. But the recorded reactions of contemporaries show us that Churchill’s task was in some ways more complicated than is generally credited.
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.
Churchill’s speech in Zurich calling for “a kind of United States in Europe” remains one of his most prophetic statements. Perhaps even more controversial - especially in 1946 - was his claim that the “first step in the re-creation of the European family must be a partnership between France and Germany”. In 1951, the treaty of Paris was signed creating European Coal and Steel Community which became a foundation block for the modern EU.
You might however consider whether you should not unfold as a background the great privilege of habeas corpus and trial by jury, which are the supreme protection invented by the English people for ordinary individuals against the state. The power of the Executive to cast a man in prison without formulating any charge known to the law, and particularly to deny him the judgment of his peers is in the highest degree odious and is the foundation of all totalitarian government, whether Nazi or Communist.
Churchill recommended that Britain send 107,000 men to France at the outbreak of the war; 100,000 troops should depart from India on the first day in order to reach Marseilles by the fortieth day. Churchill circulated the memorandum “with the hope that if the unfavorable prediction about the twentieth day had been borne out, so also would be the favorable prediction about the fortieth day.”
Expecting that the German offensive would develop along much the same lines as it did in 1914, the lines of communication of the British Expeditionary Force (BEF) did not run through the "short crossing" Channel ports – Boulogne, Calais, Dunkirk, etc. – but rather through Dieppe and Le Havre. On 13 May, the Wehrmacht's attack through the Ardennes had reached the Meuse River at Sedan and then crossed it, breaking through the defences of the French Army. By 20 May, Wehrmacht armoured divisions had reached the coast of the English Channel, splitting the BEF and the French First Army from the main French forces.[2]

Churchill Speeches WW2