Education
In 1890, Poska graduated from the faculty of Law of the University of Tartu, after that he worked as barrister in Tallinn.
In 1890, Poska graduated from the faculty of Law of the University of Tartu, after that he worked as barrister in Tallinn.
Jaan Poska was mayor of Tallinn during 1913–1917. In that position he supported reforms, like reforming healthcare and founding two schools. In April 1917, he became governor of the Autonomous Governorate of Estonia.
28 November 1917 the Maapäev refused to recognize the new Bolshevik rule and proclaimed itself the supreme legal authority of Estonia.
The Republic of Estonia formally declared independence on 24 February 1918, only to be occupied by the German Empire until the end of World War I.
On 24 February 1918, Poska was appointed the Minister of Foreign Affairs of Estonia. He worked in Western Europe for gaining diplomatic recognition to Estonia and participated in Paris Peace Conference.