![FILE PHOTO: U.S. envoy for peace in Afghanistan Zalmay Khalilzad speaks during a debate at Tolo TV channel in Kabul, Afghanistan April 28, 2019. REUTERS/Omar Sobhani/File Photo](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/OWUMGDQQTYATE6UHA2TUU2NLD4.jpg?smart=true&auth=f28cfa30165e80c5938064a6f9bfb81db49b7be87f9b8bdf0e7254d38035e79c&width=400&height=225)
US envoy for peace in Afghanistan Zalmay Khalilzad. Reuters
US envoy for peace in Afghanistan Zalmay Khalilzad. Reuters
US Afghanistan envoy warns window for peace is closing
The stark warning comes as Zalmay Khalilzad heads to Qatar for negotiations with the Taliban