Ukrainian nationalism is the ideology promoting the unity of Ukrainians into their own nation state. Although the current Ukrainian state emerged fairly recently, some historians, such as Mykhailo Hrushevsky, Orest Subtelny, and Paul Robert Magocsi, cited the medieval state of Kyivan Rus as an early precedent of specifically Ukrainian statehood. The origins of modern Ukrainian nationalism are also traced to the 17th-century Cossack uprising against the Polish–Lithuanian Commonwealth led by Bohdan Khmelnytsky.