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The document argues that conventional 'siloed' policy-making is insufficient to address the interconnected pressures of population growth, urbanization, and climate change on water, energy, and food security. It proposes a 'nexus approach' that integrates management across sectors to identify synergies and minimize negative externalities. The paper details the specific interactions between these sectors—such as the high water intensity of biofuels and the energy requirements of water desalination—and provides case studies from Jordan, Ethiopia, India, and Brazil to illustrate both the risks of non-integrated development and the potential for sustainable, pro-poor intensification.