The Peace Council, headed by President Donald J Trump[1].
The body named in the plan to monitor and guarantee the agreement.
Point 27 of the plan states the agreement will be legally binding. It says the Peace Council will monitor and guarantee its implementation, and that sanctions will be imposed for violations. The same document links this council to the Board of Peace, which does the same job: an outside body decides who qualifies and confirms that changes are done. The record does not show shared members, shared money, or a formal treaty between the two bodies.
It shows how an agreement can be called binding while the power to enforce it sits with an outside council, not the parties themselves.