So Trump had no intention of carrying out his agreement with the Taliban negotiated by Pence? How could that not help but end well?
You seem like a rather superficial (black’n’white) thinker; but this is a complex situation with many moving parts. Trump is a shades-of-meaning negotiator, and he was well aware that they would soon violate the agreement, in which case he could renegotiate the terms, or justify a massive bombardment. A lot depended on whether he would have received a mandate, which he did, discounting the election fraud.