UNIDROIT Principles were created to provide a system of rules tailored to the needs of international commercial transaction, and they embody what are perceived to be the best solutions developed by different legal systems. In commercial contracts, world harmonisation and convergence is practical for our clients. This balanced set of rules has proven to be able to ensure fairness in international commercial relations, and they are increasingly referred to in courts and international arbitration. This year, a working group of 30 members of the IBA Committees for International Sales, Arbitration and Litigation have worked on collecting examples and jurisprudence in connection with the industry practice of principles, such as good faith, fairness, hardship, specific performance, and termination in long-term contracts, such as energy supply, construction, distribution, agency and joint ventures. The draft for the work product - practical examples and suggestions to make the UNIDROIT Principles user-friendly - will be discussed interactively in this session for and by all IBA members interested in international contracts, arbitration and litigation.