Title: Flag of Italy
Content:  then lowered in November 1941 at the end of the East African campaign, which was fought during the Second World War. Italy entered the Second World War on 10 June 1940 with the famous speech by Benito Mussolini delivered from the main balcony of Palazzo Venezia in Rome; the climate, however, was very different from that which characterized Italy's entry into the First World War. The king did not appear on the balcony of the Quirinal Palace waving the flag as he did in 1915; Italy was not then crossed by that riot of tricolour flags that had greeted the country's entry 
Title: World War II by country
Content:   Italy had completed conquests (Ethiopia and Albania) prior to its entry into World War II. After the initially successful campaigns of Nazi Germany, Italy joined in the war in June 1940, planning to get a share of Allied territory with the defeat of France. The Italians bombed Mandatory Palestine, invaded Egypt and occupied British Somaliland with initial success. A friendly Fascist regime had been installed in Spain, and a puppet regime installed in Croatia following the Invasion of Yugoslavia. Albania, Ljubljana, coastal Dalmatia, and Montenegro had been directly annexed into the Italian state. Most of Greece had been occupied by Italy (despite initial defeat), as 
Title: Military history of Italy during World War II
Content:  Nazi Germany's invasion of Poland on 1 September 1939, marked the beginning of World War II. Despite being an Axis power, Italy remained non-belligerent until June 1940.
Title: Military history of Italy during World War II
Content:   The participation of Italy in the Second World War was characterized by a complex framework of ideology, politics, and diplomacy, while its military actions were often heavily influenced by external factors. Italy joined the war as one of the Axis Powers in 1940, as the French Third Republic surrendered, with a plan to concentrate Italian forces on a major offensive against the British Empire in Africa and the Middle East, known as the "parallel war", while expecting the collapse of British forces in the European theatre. The Italians bombed Mandatory Palestine, invaded Egypt and occupied British Somaliland with initial success. However, German and Japanese actions in 1941 led to the entry 
Title: Fascist Italy (1922–1943)
Content:  foreign policy: the Second Italo-Ethiopian War, which was launched from Eritrea and Somaliland; confrontations with the League of Nations, leading to sanctions; growing economic autarky; invasion of Albania; and the signing of the Pact of Steel. The fifth phase (1940–1943) was World War II itself which ended in military defeat, while the sixth and final phase (1943–1945) was the rump Salò Government under German control. Italy was a leading member of the Axis powers in World War II, battling on several fronts with initial success. However, after the German-Italian defeat in Africa, the successes of the Soviet Union on the Eastern Front, and the subsequent Allied landings 
Title: World War II
Content:   The Second Italo-Ethiopian War was a brief colonial war that began in October 1935 and ended in May 1936. The war began with the invasion of the Ethiopian Empire (also known as Abyssinia) by the armed forces of the Kingdom of Italy (Regno d'Italia), which was launched from Italian Somaliland and Eritrea. The war resulted in the military occupation of Ethiopia and its annexation into the newly created colony of Italian East Africa (Africa Orientale Italiana, or AOI); in addition it exposed the weakness of the League of Nations as a force to preserve peace. Both Italy and Ethiopia were member nations, but the League did little when the former clearly violated Article X of the League's Covenant. The United Kingdom and France supported imposing sanctions on Italy for the invasion, but the sanctions were not fully enforced and failed to end the Italian invasion. Italy subsequently dropped its objections to Germany's goal of absorbing Austria.
Title: History of the Kingdom of Italy (1861–1946)
Content:  Pacts with the Roman Catholic Church (with which Italy had been in conflict since the annexation of Rome in 1870), leading to the formation of the tiny independent state of Vatican City. He was initially on friendly terms with France and Britain, but the situation changed in 1935–36, when Italy invaded the Ethiopian Empire despite their opposition (Second Italo-Abyssinian War); because of this and of the ideological affinities with the Nazi party led by Hitler. It was a main part of the Axis Powers in World War II with allies being Imperial Japan and Nazi Germany as the Rome-Berlin-Tokyo Axis.
Title: Italy
Content:  Italy forced Albania to become a de facto protectorate. In 1935, Mussolini invaded Ethiopia and founded Italian East Africa, resulting in an international alienation and leading to Italy's withdrawal from the League of Nations; Italy allied with Nazi Germany and the Empire of Japan and strongly supported Francisco Franco in the Spanish civil war. In 1939, Italy formally annexed Albania. Italy entered World War II on 10 June 1940. After initially advancing in British Somaliland, Egypt, the Balkans, where the Governorate of Dalmatia was created, and eastern fronts, the Italians were defeated in East Africa, Soviet Union and North 
Title: Events preceding World War II in Europe
Content:  Italian Somaliland, the two Italian colonies that bordered Ethiopia. Britain attempted to broker peace but failed; Mussolini was bent on conquest. Britain declared an arms embargo on both Italy and Ethiopia, but cleared its warships from the Mediterranean, further allowing Italy unhindered access. Shortly after the League of Nations exonerated both parties in the Walwal incident, Italy attacked Ethiopia, resulting in the Second Italo-Abyssinian War. Shortly after Italy conquered Ethiopia, the Spanish Civil War began, seen by many as a proving ground for World War II, Germany provided troops, weapons, and other aid to Francisco Franco's nationalists. Italy also provided troops. On 7 April 1939, Italy invaded Albania. After a short campaign Albania was occupied and joined Italy in a personal union.
Title: Least of the Great Powers
Content:  a protectorate over Albania, which remained in place until 1920. Italy defeated the Austrian Empire at Vittorio Veneto in 1918 and became one of the permanent members of the League of Nations' executive council.  The Fascist government that came to power with Benito Mussolini in 1922 sought to increase the size of the Italian empire and to satisfy the claims of Italian irredentists. In 1935–36, in its second invasion of Ethiopia Italy was successful and merged its new conquest with its older east African colonies. In 1939, Italy invaded Albania and incorporated it into the Fascist state. During the Second World War (1939–45), Italy formed the 

Question: when did italy enter the second world war?
Answer: 10 June 1940.