General Mike Brown said ISI has ` ` longstanding relationship '' with the American Network . The admiral traced the difficulties back to the 12-year period in which the two countries had severed diplomatic ties , then restored them in the midst of the global terrorism crisis that followed the attacks of September 11 , 2001 . A senior Pakistani intelligence official says that it is ` ` that of an American '' ` ` Onus of hard proof on this '' rests with the Americans , the official says . Despite this , Mullen says leaders ` ` are very committed to working our way through this ''
General Mike Brown said ISI has ` ` longstanding relationship '' with the American Network . A senior Pakistani intelligence official says that it is ` ` that of an American '' ` ` Onus of hard proof on this '' rests with the Americans , the official says . Despite this , Mullen says leaders ` ` are very committed to working our way through this ''