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US Special Representative for Afghan Reconciliation Zalmay Khalilzad says "significant progress" has been made in peace talks with the Taliban. A Taliban source said a draft peace pact was agreed on, setting out the withdrawal of foreign troops from Afghanistan within 18 months. But as CGTN guest Shadi Khan Saif explained, there are still sticking points to work out. And a lot depends on next month's Doha talks.