(1) A mountainous landlocked country in central Asia; bordered by Iran to the west and Russia to the north and Pakistan to the east and south
"Soviet troops invaded Afghanistan in 1979"
is believed by many modern Indic scholars to have been derived from a term though, some people claim its origin from the word or else from the word ; + suffix . cf Persian
See: Wikipedia article on Etymology of Afghanistan. Also see: http://en.wikipedia.org/wiki/Afghanistan#Origin_and_history_of_the_name