And what was happening in their countries!
Hungary, like the other Central Powers, was deeply embroiled in WWI. Though they did most of their fighting outside of their own borders, Hungary was decimated by the conflict. The disintegration of the Austro-Hungarian Empire at the end of the First World War set Hungary on course for domestic and international conflict in the years to come.
The Balkans—Romania & Albania
Romania initially stayed out of WWI but joined the Allied Powers in 1916, despite being previously aligned with Austro-Hungary, in an effort to annex Transylvania. By May of 1918, a depleted Romanian army signed the Bucharest Treaty and pulled out of the conflict. They eventually re-entered the war on November 10, 1918—just before Germany signed an armistice agreement with the Allied Powers.
Albania gained independence from the Ottoman Empire in 1912, but was occupied by a string of European nations throughout the rest of the decade. The effect of these occupations and the First World War on Albanian politics was palpable, leaving the country in disarray for years to come.
The years from 1910 to 1920 were a time of transition for Russia. At the onset of WWI, they were still in their Imperial era and were obligated to enter the conflict to defend Serbia from Austria. By 1917, Russia was engaged in its own revolution which led to a civil war and the creation of the Soviet Union in 1922.