Trump posted today (May 2) saying, "Warning: All purchases of Iranian oil or petrochemical products must stop immediately! Any country or individual purchasing any amount of oil or petrochemical products from Iran will be immediately subject to U.S. secondary sanctions. They will not be allowed to engage in business with the U.S. in any way. Thank you for your attention to this matter."
The U.S. implementation of secondary sanctions on Iran's oil exports refers to the U.S. leveraging its economic hegemony to impose sanctions on third-country entities or individuals engaged in oil trade with Iran, thereby cutting off Iran's export revenue from oil.
The secondary sanctions announced by Trump are a continuation and escalation of the long-standing U.S. strategy of "maximum pressure" against Iran. This unilateral secondary sanction is an act of "long-arm jurisdiction," imposing domestic law over international law without the basis of international law or authorization from the United Nations Security Council, disrupting normal international economic and trade order, and severely damaging fundamental principles of international relations.
Tensions between the U.S. and Iran were already high; this threat of sanctions is undoubtedly adding fuel to the fire. Iran's economy heavily relies on oil exports, and such sanctions will exacerbate its economic difficulties. To safeguard its own interests, Iran may take more radical actions in regional affairs, further destabilizing the geopolitical landscape in the Middle East and increasing the risk of regional conflicts.
Source: https://www.toutiao.com/article/1830958952898567/
Disclaimer: The article solely represents the author's personal views.