NEW DELHI—U.S. Secretary of State Antony Blinken has proposed a UN meeting with five other nations, including India, China, Russia, Iran, and Pakistan, for a comprehensive and permanent ceasefire in Afghanistan, in a letter to the Afghan President Ashraf Ghani last week. Many of these nations are regional adversaries with competing stakes and experts said a positive conclusive outcome is likely difficult while the security threat will only intensify. India will be included in the international Afghan peace process for the first time. “First we intend to ask the United Nations to convene Foreign Ministers and envoys from Russia, China, Pakistan, Iran, India, and the United States to discuss a unified approach to supporting peace in Afghanistan. It is my belief that these countries share an abiding common interest in a stable Afghanistan and must work together if we are to succeed,” said Blinken in his letter to Ghani according …