Chapter D analyses the Security Council's engagement in the negotiation and implementation of peace agreements that brings about the temporary internationalisation of these agreements, as well as their non-state parties' temporary, partial legal subjectivity. The latter is based on how the Security Council approaches the non-state parties to peace agreements directly, holding them accountable for their non-compliance with the terms of peace agreements, in effect pushing towards internationalised status for the agreements and for their non-state parties. Chapter D also discusses the challenges of synchronising the interpretation and implementation of peace agreements with the interpretation of Security Council resolutions addressing these peace agreements. The Security Council's practice of quasi-interpretation and quasi-enforcement of peace agreements to settle intra-state conflicts often strongly dominates their negotiation and implementation. Therefore, Chapter D also considers the risk that the Security Council's involvement may remove control and effective authority over the interpretation and implementation of peace agreements from the state and non-state parties to agreements and make Chapter VII resolutions the source of obligations, interpretation and implementation.