I am currently reading a book discussing Afghanistan, and a topic discussed related to the Pashtun population being in Afghanistan, yet a large majority of the population was also in neighboring Pakistan. The phenomenon was called "Pashtunistan."
However, a word was used in this part (I do not remember the page number), and I forgot what that word was. It sounded similar to "endentrism" (not a word) or denturism (not a word); what the word meant when I saw the definition (the Google effect is annoying like that) related to invading, etc. some other country to defend one's people, and here, it would involve Afghans hypothetically invading Pakistan because a large part of their ethnic group is there. It is similar to Russia invading Ukraine because ethnic Russians are in the eastern areas. Maybe the nuance did not include "invade," but that seems to correlate to the word's context of use.
I hope this is enough context. Does anyone know what this word is? It can have both -ism and -ist endings.