U.S. special envoy to Afghanistan, Zalmay Khalilzad in Kabul [Getty Images]

KABUL, AFGHANISTAN - FEBRUARY 18: (----EDITORIAL USE ONLY MANDATORY CREDIT - "AFGHAN PRESIDENCY / HANDOUT" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) Afghan President Ashraf Ghani receives U.S. special envoy to Afghanistan Zalmay Khalilzad at the Presidential Palace in Kabul, Afghanistan on February 18, 2019. (Photo by Afghan Presidency / Handout/Anadolu Agency/Getty Images)

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