Dockadams -- I agree. If one wants to understand the Taliban's hatred towards America long before the 9/11 attacks, then look at the Saudi Arabia financed madrassas that teach the most extreme puritanical form of Sunni Islamism called Wahhabism. According to Chris Murphy in 2016, the Saudi's spent at that time over $100 billion funding madrassas and mosques all over the world with the mission of spreading puritanical Wahhabi Islam. Strictly speaking, the Taliban practice Deobandism, another fundamentalist form of Islam very similar to Wahhabism. However, the Saudi financing of madrassas in Pakistan means that the distinction between the two sects of Sunni Islam are essentially moot when it comes to their hatred of Western societies.
In this respect it is almost impossible to negotiate any terms with the Taliban because any accommodation to Western society would be seen as violating their extreme Islamic fundamentalist creed. Their clerics are being largely funded by Pakistan and Saudi Arabia...and who knows what the Russians are stirring up behind the scenes.
On that note, Afghanistan has become America's catastrophic and endless blunder, and Russia (Putin) would like nothing more than to see us and our allies expend our human and financial resources to keep that blunder going on forever. As soon as the appearances of a negotiated settlement appear, something happens to scuttle it.
Trump, the deal making president, thinks he can bring about a face saving solution in Afghanistan. That is as absurd as his deal making for a peaceful solution with Kim Sung-Un in North Korea.