The October 2025 cease-fire and hostage-release deal that ended the Israel-Hamas conflict marks the beginning of a complicated post-war phase. The agreement has created important opportunities to advance stability in the Middle East and build a lasting and sustainable peace marked by enhanced regional security and integration, but there are considerable risks to manage. Achieving these goals will require coordinated international action along multiple lines of effort: security, rule of law, recovery and reconstruction, responsive governance, and steady and focused diplomacy to build confidence among key parties.