Isis gains traction in Afghanistan as US talks collapse

Minutes after the younger brother of Afghanistan’s Taliban chief rose to lead Friday prayers at a Pakistan mosque last month, a bomb ripped through the building.

The brother of top leader Mullah Habatullah Akhundzada was one of five people killed in an attack police link to Isis’s growing Afghanistan affiliate. The Islamist movement is locked in a fierce rivalry with the Taliban, whose influence straddles the border of the two countries.

A surge of Isis violence...