Career
In 1917 – he was personal Adjutant General Secretary of Military Affairs Symon Petliura. 14 December 1917, General Secretariat of the Ukrainian People"s Republic issued mandate to Yuri Hasenko to perform special mission abroad. He managed to carry out a number of important events of diplomatic and intelligence character in Vienna, Berlin, Paris, London, Rome, Washington and some other capitals.
In 1919–1920 – he was associate Ukrainian Embassy in Romania.
Then in exile in Germany and Czechoslovakia. On 11 March 1920 – he was chairman of the Ukrainian national flying club in Vienna.
