IS-K: Who are the group rising up against the Taliban?

20 years ago today the UK, US and coalition forces began a military offensive to overthrow the Taliban in Afghanistan.

Today the Taliban is back in charge –  facing an insurgency very similar to the one they once posed.

Islamic State Khorasan Province – otherwise known as IS-K – is the regional affiliate of the Islamic State group.

They came to prominence when they attacked Kabul airport as people were trying to flee – killing almost 200 people – including 13 US troops.