New York (Muhammad Saleh Zafar/Special Analyst) Zalmay Khalilzad, the former permanent representative of the United States of Afghan origin to the United Nations, has expressed his disappointment about the future of Tehreek-e-Insaf and its leader Imran Khan, saying that the founder of Tehreek-e-Insaf does not seem to be released soon, and Pakistan and Afghanistan should resolve mutual conflicts through understanding.