Normative Incompatibility System Integration and Governance Implications. Integrating Sustainable Development in International Investment Law presents an exclusive and systematic study of the issue of SD in IIL, exploring the challenges and possible ways to make IIL more SD compatible from conceptual, normative and governance perspectives. Chi further suggests that to effectively address the SD concerns associated with transnational investment activities, the IIAs system should be reformed. Such reform should feature redesigning the IIA provisions, improving the IIA structure, strengthening the function of soft law, engaging non-state