https://www.nytimes.com/2018/10/04/world/asia/afghanistan-erik-prince-blackwater.html
This article should give a background on what is happening and what are US plans in Afghanistan.
In summary,
1. War in Afghanistan was costing billions and more importantly was a monkey around US's neck. You know, once a soldier dies, you have to provide a lot of support to the next of the kins.
2. Erik Prince, founder of Blackwater had his eyes on this war for sometime. His solution: Remove troops from Afghanistan, let Blackwater in there and let them run the show including air support.
3. His two road-blocks McMaster and Mattis were managed out by Trump to make way for him and his business.
Now the private wars begin. And ofcourse it will be dirty.
This is not going to be the same diplomatic game. It is going to be pure financial game brutal and dirty game. Expect more refugees if you are bordering Afghanistan. If a region has rare earths, the region will be extracted and people living there will be managed out. It will bring more US corporates into Afghanistan.
India was perhaps never in the script to begin with. They needed someone to fund the private forces or to provide man-power. India it looks like decided against it. So did Pakistan too.
Afghanistan is the hot potato that no one wants to burn their fingers with.