ISI funding and training taliban

"This goes far beyond just limited, or occasional support," he said. "This is very significant levels of support being provided by the ISI.

"We're also saying this is official policy of that agency, and we're saying that it is very extensive. It is both at an operational level, and at a strategic level, right at the senior leadership of the Taliban movement."

It's an open secret that the ISI supports the taliban (the ISI created the taliban).

The Pakistani's basically have us by the balls when it comes to Afghanistan. Most of our supplies goes through Pakistan. If our payments to Pakistan stop all of a sudden I bet all of our supplies wouldn't get through to our soldiers in Afghanistan.

Pakistan is extorting money from us...pure and simple.

BBC

Pakistani intelligence gives funding, training and sanctuary to the Afghan Taliban on a scale much larger than previously thought, a report says.

Taliban field commanders interviewed for the report suggested that ISI intelligence agents even attend Taliban supreme council meetings.

Support for the Afghan Taliban was "official ISI policy", the London School of Economics (LSE) authors suggest.[...]

Links between the Taliban and Pakistan's intelligence service have long been suspected, but the report's author - Harvard analyst Matt Waldman - says there is real evidence of extensive co-operation between the two.[...]

Mr Waldman spoke to nine Taliban field commanders in Afghanistan earlier this year.

Some alleged that ISI agents had even attended meetings of the Taliban's top leadership council, the so-called Quetta shura. They claim that by backing the insurgents Pakistan's security service is trying to undermine Indian influence in Afghanistan.

"These accounts were corroborated by former Taliban ministers, a Western analyst and a senior UN official based in Kabul, who said the Taliban largely depend on funding from the ISI and groups in Gulf countries," the report said.