Quick and brutal. The Taliban are in Kabul already. US intelligence said 90 days. Which shows how accurate their understanding of Afghanistan is, and that is the level of intelligence which they used to attempt nation building.

The US is supposed to have asked the Taliban leadership to remain outside the city until they evacuated. That doesn't look like it's going to happen. Local Talib commanders never listen to their leadership anyway, and different commanders may be racing to capture resources and influence.

The US have now put the Taliban in the position where they can be seen to stand by and "allow" the most powerful…