1917-1918 Chairman of the Estonian Province Assembly. 1918, Chairman of the Estonian Rescue Committee. 1918, imprisoned by the German occupation powers, from July to November 1918 in a prison camp in Poland. In 1918, while the Prime Minister of the Provisional Government of Estonia, as well as the Minister of Internal Affairs, 1918 the Minister of War. 1922-1923 Chairman of I Riigikogu.1917-1919 member of the Estonian Province Assembly, 1919-1920 member of the Constituent Assembly, 1920-1934/37 member of the I-V Riigikogu.