Iranian-Belgian relations witnessed significant development in politics and economics between 1928 and 1975, reflected in a series of bilateral agreements and treaties. These agreements focused on strengthening cooperation in trade, investment, transportation, and diplomatic relations. Political and Diplomatic Agreements: • This period saw several agreements that reinforced diplomatic ties between the two countries, including the exchange of ambassadors, diplomatic immunity guarantees, and the development of friendly relations in accordance with international laws. Economic and Trade Agreements: • Several agreements were signed to regulate bilateral trade, facilitate mutual investments, and provide tariff exemptions for certain goods. • The 1950 agreement enhanced cooperation in mining and heavy industries, with Belgian companies playing a role in Iran's infrastructure projects. 2 • The 1963 agreement focused on encouraging and protecting mutual investments, strengthening Belgian companies' presence in Iran's energy and transportation sectors. Cooperation in Transportation and Energy: • Agreements were signed to regulate maritime and air transport between the two countries, alongside collaboration in developing Iran's transportation infrastructure. • Cooperation in the energy sector emerged, with Belgian companies contributing to electric power and oil projects. This phase concluded with agreements that included mutual economic facilitations, reflecting significant progress in Iranian-Belgian relations until the mid-1970s.