Question: When did the country that the leader of the Luftwaffe aligned with join the allies in ww2?

<P0-S0> The bombing failed to demoralise the British into surrender or significantly damage the war economy. <P0-S1> The eight months of bombing never seriously hampered British production and the war industries continued to operate and expand. <P0-S2> The Blitz was only authorised when the Luftwaffe had failed to meet preconditions for a 1940 launch of Operation Sea Lion, the provisionally planned German invasion of Britain. <P0-S3> By May 1941 the threat of an invasion of Britain had passed, and Hitler's attention had turned to Operation Barbarossa in the East. <P0-S4> In comparison to the later Allied bombing campaign against Germany, the Blitz resulted in relatively few casualties; the British bombing of Hamburg in July 1943 inflicted some 42,000 civilian deaths, about the same as the entire Blitz. <SEP> <P1-S0> Some 28 Italian divisions participated in the Balkan invasions. <P1-S1> The coast of Yugoslavia was occupied by the Italian Army, while the rest of the country was divided between the Axis forces (a German and Italian puppet State of Croatia was created, under the nominal sovereignty of Prince Aimone, Duke of Aosta, but actually governed by the Croatian fascist Ante Pavelić). <P1-S2> The Italians assumed control of most of Greece with their 11th Army, while the Bulgarians occupied the northern provinces and the Germans the strategically most important areas. <P1-S3> Italian troops would occupy parts of Greece and Yugoslavia until the Italian armistice with the Allies in September 1943. <SEP> <P2-S0> nato has added new members seven times since its founding in 1949, and since 2017 nato has had 29 members. <P2-S1> twelve countries were part of the founding of nato: belgium, canada, denmark, france, iceland, italy, luxembourg, the netherlands, norway, portugal, the united kingdom, and the united states. <P2-S2> in 1952, greece and turkey became members of the alliance, joined later by west germany (in 1955) and spain (in 1982). <P2-S3> in 1990, with the reunification of germany, nato grew to include the former country of east germany. <P2-S4> between 1994 and 1997, wider forums for regional cooperation between nato and its neighbors were set up, including the partnership for peace, the mediterranean dialogue initiative and the euro - atlantic partnership council. <P2-S5> in 1997, three former warsaw pact countries, hungary, the czech republic, and poland, were invited to join nato. <P2-S6> after this fourth enlargement in 1999, the vilnius group of the baltics and seven east european countries formed in may 2000 to cooperate and lobby for further nato membership. <P2-S7> seven of these countries joined in the fifth enlargement in 2004. the adriatic states albania and croatia joined in the sixth enlargement in 2009, montenegro in 2017. <SEP> <P3-S0> within the luftwaffe, there was a more muted view of strategic bombing. <P3-S1> the okl did not oppose the strategic bombardment of enemy industries and or cities, and believed it could greatly affect the balance of power on the battlefield in germany's favour by disrupting production and damaging civilian morale, but they did not believe that air power alone could be decisive. <P3-S2> contrary to popular belief, the luftwaffe did not have a systematic policy of what became known as "terror bombing". <P3-S3> evidence suggests that the luftwaffe did not adopt an official bombing policy in which civilians became the primary target until 1942. <SEP> <P4-S0> The Nazi regime under Adolf Hitler came to power in 1933, and along with Mussolini's Italy sought to gain control of the continent by the Second World War. <P4-S1> Following the Allied victory in the Second World War, Europe was divided by the Iron Curtain. <P4-S2> The countries in Southeastern Europe were dominated by the Soviet Union and became communist states. <P4-S3> The major non-communist Southern European countries joined a US-led military alliance (NATO) and formed the European Economic Community amongst themselves. <P4-S4> The countries in the Soviet sphere of influence joined the military alliance known as the Warsaw Pact and the economic bloc called Comecon. <P4-S5> Yugoslavia was neutal.