Since then, the bigger cause of the region’s unrest and export of terrorism is Pak-Af geo-politically and geo-strategically. Unless the US deals with Pakistan, it cannot win in Afghanistan. If the policy is not directed at where the problem is, the US can spend another 16 years and a trillion dollars more, but will only be “Bush pruning” and “Trump cutting”, while the fundamentals of the problem continue to feed and take deeper roots in Pakistan.