Despite Iran's unique geostrategic and geoeconomic position and its location on various transit routes, including the North-South Corridor, sufficient attention has not been paid to this extraordinary capacity. Iran's transit capacity is set to expand, bolstering its economic diplomacy with countries around the world. This expansion is expected to lead to increased dependence on economic cooperation with Iran, thereby reducing the nation's vulnerability to sanctions. However, in recent years, the country has experienced a decline in transit volume. While this downturn can be attributed to sanctions and the COVID-19 pandemic, it is also closely linked to external actions and sabotage activities, including terrorist attacks on Iranian soil. This research aims to address the question of the objectives pursued by terrorist groups and other rival actors engaged in competition with Iran along the North-South Corridor. The hypothesis posits that the series of terrorist attacks perpetrated by the Jaish al-Adl group in the southeast of Iran suggests that rival countries are covertly supporting small terrorist organizations to destabilize Iran's transport routes in pursuit of their own interests. These interests include marginalizing Iran in the sphere of commercial corridor competition and strengthening their own positions. These actors pursue their agenda by instigating insecurity within Iran's corridors, ultimately discouraging foreign investors from engaging in projects such as those at the Chabahar port in southeastern Iran. Their operations range from targeted and indiscriminate attacks—affecting civilians and military installations alike—to planting mines, explosive traps, and roadside bombs on critical transportation routes. Such actions serve to portray the southeastern regions of Iran, particularly around Chabahar port, as unsafe, thereby significantly undermining and potentially neutralizing the Islamic Republic of Iran's role in global transit. Consequently, as Iran's competitors enhance their influence by developing robust transport fleets and strengthening their presence in key commercial corridors, it is crucial for policymakers and officials to address the security challenges affecting borders, transport fleets, and foreign trade. If these issues remain unresolved, Iran risks being sidelined in the global arena, as the world will not hesitate to seek alternative transit routes.