and the Soviet Union is signed: The Soviet Union can use rail lines from the Soviet border to Hanko. Only three trains are allowed to be simultaneously in Finland. April 1941 As the German plans for an attack on Russia were taken seriously by the Swedish government, it was discussed between the Cabinet and the Commander-in-chief how Sweden could react in case of a war between Germany, Finland and Russia. The Commander-in-chief warned of the danger of a continued policy of neutrality, which could provoke German anger and occupation. Plans for cooperation with Germany and Finland were made. Individual Cabinet members considered cooperation with the Soviet Union, however this was fiercely rejected by a large cabinet majority. Midsummer 1941 In connection with Germany's attack on Russia on Midsummer's Day 1941, Sweden had its most serious cabinet crisis: 22 June 1941, with Operation Barbarossa the German invasion of the Soviet Union starts. Germany demanded to transit the fully armed Division Engelbrecht (163. Inf. Div) from Norway to Finland. 23 June 1941 The Cabinet discuss the requested transit of one armed division (Division Engelbrecht) from northern Norway to northern Finland. Agrarians, Liberals and the Right supported acceding to the combined Finnish-German request. Some Social Democrats opposed it. The king declared "he would not be a party of giving a negative answer to Finland's and Germany's request", which was tactically cited by the prime minister in terms of a threat of abdication. It has not been decisively shown whether the prime minister's interpretation was purely tactical, or if he in fact had perceived an honest intention to consider abdication on the part of the king, but the prime minister's record and personality speak for the tactical-theory. 24 June 1941 The Social Democratic parliament group decides, with the votes 72-59, to try to convince the other parties for a rejection, but to agree in case they insisted. The other parties seemed prepared to split the Cabinet. 25 June 1941 The Swedish government accepts the transit of Division Engelbrecht. 25 June 1941 Soviet Union stages a major air assault with 460 planes against Finnish targets. Finnish government issues a statement that Finland is at war, later called the Continuation War. 9 July 1941 The German troop transports , Preussen, and are sunk by Swedish mines in Swedish waters outside southern Öland. 200 Germans drowned. 11 July 1941 Finland's official ambitions for a Greater Finland become