What is a naval blockade and how would it work in Strait of Hormuz?
What is a Naval Blockade and How Would It Work in Strait of Hormuz?
Iran has effectively sealed the Strait of Hormuz, a critical passage for about 20% of the world’s oil and gas shipments, as part of its military tactics. U.S. President Donald Trump announced plans to implement a blockade after negotiations with Iran in Pakistan stalled. He accused Tehran of refusing to abandon its nuclear aspirations, stating that the talks collapsed due to “Iran’s unwillingness to give up its nuclear ambitions.”
Trump’s Blockade Strategy
On Sunday, Trump posted to Truth Social, declaring the U.S. would “BLOCKADING any and all Ships trying to enter, or leave, the Strait of Hormuz.” He ordered the Navy to intercept vessels in international waters that had paid Iran a toll, asserting that “no one who pays an illegal toll will have safe passage on the high seas.” The president also vowed to destroy mines deployed by Iran in the strait, threatening to “BLOWN TO HELL” any Iranian who targeted U.S. forces or peaceful ships.
“Any Iranian who fires at us, or at peaceful vessels, will be BLOWN TO HELL!”
Trump claimed that Iran had not allowed free passage, relying on vague warnings about hidden mines to delay agreements. He emphasized that the goal was to enforce an “all or none” policy, ensuring that all ships could pass without Iranian influence. “Iran promised to open the Strait of Hormuz, and they knowingly failed to do so,” he wrote, urging the international waterway to be “OPEN AND FAST.”
International Involvement and Legal Concerns
According to the U.S. Navy Commander’s handbook on naval operations law, a blockade is defined as a belligerent effort to prevent vessels and aircraft from entering or exiting enemy-controlled areas. Trump suggested that NATO would assist in clearing the strait, adding that it would be “free to use again in not too long a distance.” While he mentioned other countries would join the blockade, the BBC reported the UK would not participate.
“We continue to support freedom of navigation and the opening of the Strait of Hormuz, which is urgently needed to support the global economy and the cost of living back home.”
A UK government spokesperson reiterated that the strait “must not be subject to tolling” and highlighted collaboration with France and other partners to safeguard maritime access. Three U.S. legal experts warned that the blockade could challenge international maritime law, questioning whether military enforcement would breach the current ceasefire terms.
Strategic Impact and Analyst Perspectives
The strait’s geography has enabled Iran to leverage its control, restricting traffic and inflating oil prices by limiting passage. By closing the waterway, Trump aims to disrupt Iran’s revenue stream, though this could inadvertently raise global energy costs. Analysts suggested the move is designed to pressure Iran into accepting U.S.-favorable terms, using the blockade as a tool to force a resolution to the conflict.
On CBS’ Face the Nation, Republican Congressman Mike Turner of Ohio supported the strategy, stating that the blockade would push for a clear outcome in the dispute.
