This section provides a brief overview of the issues that impact and interact with more than one domain of economic, social and environmental development. The Cross Cutting Issues are not restricted to water management sector per se; on the contrary, decisions made in other sectors or nationwide scale, strongly influence how water policies perform in specific situations. The Cross Cutting Issues are grouped into five areas which include: gender, youth, governance, financing and transboundary cooperation. These issues require action in multiple fields and are not limited to water management. Understanding the nature of each of the Cross Cutting Issues in relation to water management is important in order to set up appropriate mechanisms and institutional arrangements. The Cross Cutting Issues and Critical Challenges are complementary sections to IWRM ToolBox Tools.