Washington's peace envoy Zalmay Khalilzad, attends Ashraf Ghani's inauguration ceremony at the presidential palace in Kabul, Afghanistan. AP
Washington's peace envoy Zalmay Khalilzad, attends Ashraf Ghani's inauguration ceremony at the presidential palace in Kabul, Afghanistan. AP

US-Taliban deal enters 'next phase' as envoy pushes group to reduce violence