sentences:  Oddly he appears to have found the time to obtain a doctor's degree in physics at the university of Charkov in 1917 on the thesis ".In 1918 he became an accredited war-correspondent to the French government, for which later that year he travelled to the USA, Japan and the Russian Far East.In the US he met former president Teddy Roosevelt and Tomáš Masaryk who became in 1920 president of Czechoslovakia.