 On 10 May 1940, Germany launched a major offensive into the Low Countries and France, and as the Wehrmacht continued to advance into France, the king's opposition to Italy entering the war started to weaken by the second half of May 1940.Mussolini argued all through May 1940 that since it was evident that Germany was going to win the war that here was an unparalleled chance for Italy to make major gains at the expense of France and Britain that would allow Italy to become the dominant power in the Mediterranean.On 1 June 1940, Victor Emmanuel finally gave Mussolini his permission for Italy to enter the war, though the king retained the supreme command while only giving Mussolini power over political and military questions.