Not allied troops - though they are.
It's the other lot. Dressed as locals, because they are locals, these boys drive or walk among innocent and unarmed children, women and men.... then blow them up.
That's Afghanistan and IS.
The supporters of these despicable bastards (sorry) are amongst us here in the UK, US, France and other places. They are not Taliban. The Taliban just want to establish an Islamic Emirate in Afghanistan and they hate them as much as we do - they, the Taliban, are not International terrorist in the way Al-Qaeda and IS are.
So what do we do? Work with our former enemies, the Taliban, to help them eradicate IS And Al-Q in Afghanistan, or obliterate IS and Al-Q here at home by whatever means?
We are too soft to do the second, so......