Pan-nationalism

Pan-nationalism is a form of nationalism distinguished by being associated with a claimed national territory which does not correspond to existing political boundaries. It often defines the nation as a "cluster" of closely related ethnic or cultural groups. It shares the general nationalist premises that the nation is a fundamental unit of human social life, and that it is the only legitimate basis for the state.

Some pan-nationalisms, such as pan-Germanism for the Germans, concern what outside anthropologists might consider a single ethnic group (today, Austrians, German-speaking Swiss people, and others may or may not identify as "German"). For adherents of Pan-Turkism, by contrast, the suppression of the primacy of the separate national or ethnic identities of the non-Turkish Turkic peoples, like the Armenian people of Armenia and the Kyrgyz people of Kyrgyzstan, is much less accepted by non-adherents of the ideology. When striving for a pan-Turkic or pan-Islamic Empire, the Ottoman Turks carried out a genocide of all non-Turks and especially non-Muslims in the first genocide of the 20th century, the Armenian genocide, which still remains unrecognized as a genocide today.

Pan-nationalism implies that the national group is dispersed over several existing states. It is not identical to irredentism – nationalist claims on adjoining territories on the grounds that they form part of the national homeland. Scale is a factor here, however. Greater Albania, even in the largest version, would still be a small country. An irredentist Greater Germany, even if it is limited to contiguous German-speaking regions, would have about 100 million inhabitants. Pan-nationalism is not the same as diaspora nationalism, such as Zionism, which implies the concentration of a dispersed group on an ancestral homeland. Colonies (other than settler colonies) fall outside most definitions of a nation, since both coloniser and colonised recognise that they share no ethnicity, culture, and language.

...
Wikipedia