It is a well known fact that Pak is the epicentre of global jihadi terrorism. Mohd Atta of 9/11 US attack, some involved in the Londan train bombs, were all connected with Pak in one way or the other. Nuclear design thief (stolen from his employer in Nederlands/Holland) Dr.Khan is from Pak. He also sold this deadly mfg technology to rogue countries like N.Korea, etc. for huge sums. This is advanced terrorism, because imagine if he has sold nuclear bomb making process to some rogue people like alqaida, you can very well imagine its repurcussions. You name any Jihadi organizations, their HQs or branches will be there in Pak. It has propped up Talibans in Afghanistan so that they can have a free run in Afghanistan. Terrorists have been accommodated, trained, armed, and funded, in Taliban controlled Afghanistan earlier, and then sent to all over the world to create mayhem. You will recall that IA plane which was hijacked by Pak terrorists landed in Taliban controlled Kandahar, and the released terrorists from Indian prisons, immediately drove towards Pak. You can very well imagine the extent of nexus between Pak, ISI & the Talibans. Pak generally draws its quota of terrorists from these training schools to kill innocent people in J&K and elsewhere in India. India's most wanted criminal Dawood Ibrahim was sighted living a luxury life in Pak, like a guest of the State.
However 'you will reap what you sow' The terrorism which Pak was growing to bite India has