Final answer:
Winston Churchill's policy during WWII was characterized by steadfast resistance against Germany, emphasizing the need for total war and rejecting any form of negotiation with Hitler. He led Britain through the Battle of Britain, inspiring the nation and securing critical support from the United States, which helped stave off the German invasion and maintain British independence.
Step-by-step explanation:
Winston Churchill's policy for Britain during World War II was to firmly resist and counter the aggression of Adolf Hitler's Germany. Upon becoming Prime Minister in May 1940 after Neville Chamberlain's resignation, Churchill articulated a policy of unwavering defiance, pledging to wage war on all fronts and famously stating, "I have nothing to offer but blood, toil, tears and sweat." His leadership was defined by a refusal to negotiate with the Axis powers, despite the island nation's vulnerable position following the retreat from Dunkirk and the looming threat of Operation Sea Lion - the planned German invasion of Britain.
During the critical period of the Battle of Britain, Churchill inspired the nation with his speeches, emphasizing British resolve to fight to the very end and maintain their freedom against fascist domination. His government's approach included not only military defense but also forging crucial international alliances, notably with the United States, leading to the Atlantic Charter and solidifying support from President Franklin D. Roosevelt. Churchill's correspondence with Roosevelt emphasized the mutual threat posed by a potential German victory and facilitated American material and financial aid, which became pivotal in sustaining Britain's war effort against Germany's aerial onslaughts.