Britain’s top general is unhappy about US Afghanistan withdrawal plans

The Brits can stay, hell when I was there in 2014 the only country based at Kandahar going outside the wire besides the U.S. was Romania. I think Poland sent troops outside the wire up in BAF.

This is from the article: In a commentary published before Carter made his remarks Reynolds said he thought “the current Afghan government is unlikely to survive.”

I want to understand his logic. How and with what will the Taliban defeat the Afghan government?