Currently it is not a threat to Pakistan, since Pakistan Armed Forces are on hunting mission and make their nursery a play ground they can't do anything more then merely bomb blasts and its the responsibilty of Intel agencies to stop them.
On the other end ISIS believe to capture lands and rule over it and they can't do it in Pakistan atleast where a 800 thousand war hardend army on top of 70 million armed peoples.
whistle in the dark - Wiktionary