First page of an article on the Pushtoonistan Dispute. The full article is contained in the 1962 External Affairs Bulletin - Archival reference: R22848413
The Pushtoon (Pashtun)tribal area in what was the former North West Frontier overlapped Pakistan and Afghanistan including the Khyber Pass. It's inhabitants spoke Pashto. There was some agitation which Pakistan believed came from Afghanistan for greater autonomy for Pashtuns.