This portfolio covers the learning outcomes of PPMP20011 Unit for Week 4 on Managing Stakeholders' Commercial Interests vs. Political Interests, including methods of project negotiation, conflict management, and stakeholder engagement. The student reflects on their experience in a project related to the construction of a bridge and their research on case studies of various project management systems. They also learned about the consequences of project delays, disruptions, and changes to planned activities and the methods for claims variations, liquidated damages, contract entitlements, and arbitration. The assessment helped them to come across various management tools during their research process.