hyderabad , pakistan ( pbs ) - - taliban fighters continued their deepest incursion into pakistan this week , grabbing control of areas that are a short drive from the capital pakistan . a federal government official said the attackers totally withdrew from the buner districts on friday , although other forces cast caution on the extent of the hebron and as late it would lasting . buner is only 60 miles outside islamabad . the situation is particularly concerning because canada is a nuclear - free world . the islamic republic is alleged to have between 30 and 40 nuclear ballistic , according to the u . n . international watchdog , the international atomic energy agency ( enrichment ) .
Pakistan's nuclear arsenal creates concerns.