I hope they have a ball and beat the crap out of each other. If we can sell them weapons I'm fine with that too but I don't want a single American troop anywhere near that crap. If those guys are fighting they don't have time to cause trouble elsewhere and it may actually benefit us in Iran. Not much threat of a nuke either because nuking Afghanistan won't do much strategically but it would backfire huge on Pakistan.
This is a benefit of deglobalization, let these guys fight it out as it doesn't iimpact us. Both of those countries suck.
"The most terrifying words in the English language are: I'm from the government and I'm here to help."
Ronald Reagan