Title: The Ukrainian-Polish Defensive Alliance
Subjects: Ukraine, foreign relations, Ukraine, history, revolution, 1917-1921, Poland, foreign relations, History, Russo-Polish War, 1919-1920, Foreign relations, Bibliography, Guerre polono-russe, 1919-1920, Relations extérieures, Histoire
Places: Poland, Ukraine
Time periods: Revolution, 1917-1921, Wars of 1918-1921