Pakistan gave solace to the Taliban when they were fleeing America's wrath after 9/11. Pakistan's govt of that time, welcomed thousands of the hardcore islamists fleeing with their families and turned a blind eye when those Afghan immigrants starting forming their own groups of terror cells inside Pakistan to help their brothers in Afghanistan against the USA and allies. This is what happens when you give asylum to those fleeing from war in their own countries. The accepting nations have no clue to the terror-related virus that is being brought into the country by the asylum seekers.
End result = innocent lives lost to terrorism only because of government corruption, bad decisions and greed for personal wealth.
TheTelegraphUK has a continuation of the pics.