At first the Afghans blamed Pakistan for the situation they were in. Islamabad is accused of providing shelter to the Taliban. Several years ago former Pakistani president General Pervez Musharraf acknowledged the ISI was responsible for the birth of the Taliban. Because the government and most of the population of Afghanistan are more supportive of India. it all depends on how Pakistan explains this phenomenon to the public, so that investors don't leave Pakistan
Pakistan has supported various militant groups, to pursue their interests in Kashmir and Afghanistan. And regarding Taliban, I would agree. The Taliban was an unsophisticated and unorganized outfit and it was the CIA which transformed it in to a deadly conventional terror organization by supplying it with modern weaponry and training. They wanted to kick out the USSR from Afghanistan, and hoped that the Taliban would do the job for them. The ISI mostly played a supporting role. And once the Soviets puled out of Afghanistan, the Taliban turned their weapons against those who supplied them in the first place.