University of Tabriz Jurisprudence and Islamic Law 28210891 15 35 2024 06 24 The Concept and Nature of “Due Diligence” in International Law The Concept and Nature of “Due Diligence” in International Law 113 140 19295 10.22034/law.2024.57848.3307 FA Seyed Mohammad Hoseini Ph.D. Candidate in International Law, Mofid University of Qom, Iran Saeed Rahaee Associate Professor, Mofid University of Qom, Iran Journal Article 2023 08 03 Nowadays “due diligence” is considered one of the controversial issues in international law. The effectiveness of this provision in various fields of international law, including human rights, humanitarian law, international investment law, state responsibility, environmental law, and other fields of international law, has sparked many papers and research on it. Due diligence is a deliberately flexible standard in international law that requires states and intergovernmental organizations to act with utmost care in meeting their contractual and customary commitments. This maximum commitment for each country or intergovernmental organization will be different and subject to change depending on the situation and conditions of the case, the ability of the country or intergovernmental organization, the importance of the interests that are at risk of damage, and other effective components. In terms of its nature, due diligence is not only the primary rules of behavior and not the secondary rules of responsibility, but like good faith, it is a quality with which primary obligations must be fulfilled. Nowadays “due diligence” is considered one of the controversial issues in international law. The effectiveness of this provision in various fields of international law, including human rights, humanitarian law, international investment law, state responsibility, environmental law, and other fields of international law, has sparked many papers and research on it. Due diligence is a deliberately flexible standard in international law that requires states and intergovernmental organizations to act with utmost care in meeting their contractual and customary commitments. This maximum commitment for each country or intergovernmental organization will be different and subject to change depending on the situation and conditions of the case, the ability of the country or intergovernmental organization, the importance of the interests that are at risk of damage, and other effective components. In terms of its nature, due diligence is not only the primary rules of behavior and not the secondary rules of responsibility, but like good faith, it is a quality with which primary obligations must be fulfilled.

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