Khorasan today is the modern state of Afghanistan, and neighouring parts of Pakistan, Iran, Uzbekistan etc.

Khorasanians will consists of mainly Pashto leaders (who I, am partly).

In a Hadith it it stated that after Israel becomes the ruling state of the world, Khorasan will start a march against Israel and any Muslim even if they have to crawl over ice, should join that army.

Afghanistan is the oldest Muslim nation (303 years old), even older than neighbouring Pakistan which was created just 65 years ago, and ancient Iran which gained it's nationality as early as 625 BC, but it's full dependence less than 32 years ago after it lost the Shah and become an Islamic country





1 April 1979 (Islamic Republic of Iran proclaimed); notable
earlier dates: ca. 625 B.C. (unification of Iran under the Medes); ca.
A.D. 1501 (Iran reunified under the Safavids); 12 December 1925 (modern
Iran established under the Pahlavis)


https://www.cia.gov/library/publications/the-world-factbook/fields/2088.html