Tensions Rise In The Strait of Hormuz as Iran, U.S Talk Failed
As tensions rise in the Strait of Hormuz, questions are now turning to the legality and the real-world impact of a U.S.-led naval blockade targeting Iran. Under international law, experts say a blockade can be a legitimate tool of warfare, but only under strict conditions.
In an international armed conflict, naval blockades fall under international humanitarian law, specifically the law of naval warfare. While they are permitted, they must meet key legal requirements.
First, a blockade must not disproportionately affect neutral states. This means, for example, that a full closure of the Strait of Hormuz would likely be unlawful, as it would severely impact countries within the Persian Gulf that are not party to the conflict.
Second, humanitarian considerations are critical. Essential goods, particularly food, must be allowed through. A blockade cannot be used to starve a civilian population or create a humanitarian crisis.
Third, and crucially, the blockade on the Strait of Hormuz must be impartial.
That means it cannot selectively target only one nation’s ships. Instead, it must apply to all vessels, regardless of flag, if they are traveling to or from the targeted country. This aligns with statements from United States Central Command, which has indicated that the measures would apply to any ship entering or leaving Iranian ports.
Taken together, these conditions suggest that such a blockade, if implemented correctly, can be considered lawful, particularly as a means of applying economic pressure during conflict.
But legality does not eliminate complexity.
Some analysts believe the immediate impact of the blockade may be limited. Shipping traffic through the Strait has already dropped significantly, not because the waterway is closed, but because companies consider it too risky.
Under normal conditions, around 130 ships pass through the Strait daily. In recent weeks, that number has dropped dramatically, with only a handful of vessels moving through on average. Interestingly, many of those ships have been directly linked to Iran, either exporting oil or delivering supplies.
So far, the United States has not fully stopped that flow. In fact, earlier in the conflict, there were even indications of reduced enforcement on Iranian oil exports. This suggests that the current move is less about total shutdown and more about increasing pressure.
There is also a strategic dimension
Reports in U.S. media and intelligence circles suggest concerns that countries like China or Russia could attempt to supply Iran with military equipment, including air defense systems. A maritime blockade would aim to prevent exactly that, cutting off both economic lifelines and potential military resupply routes.
However, this introduces another risk: escalation.
Under the law of blockade, any vessel, regardless of nationality, can be stopped, boarded, and searched if it is suspected of trading with Iran. That means ships from neutral or even friendly nations could be intercepted.
And that raises the stakes significantly.
Because the moment a vessel linked to a third-party country is stopped or seized, the potential for confrontation increases, whether that country is aligned with the U.S., aligned with Iran, or neutral.
Despite these risks, some experts argue that a blockade is still a more measured approach compared to direct military strikes on infrastructure, which could have long-term economic and humanitarian consequences.
From a commercial perspective, the reaction has been mixed, but not entirely negative. Shipping companies, in many cases, are less concerned about the blockade itself and more concerned about safety. Their reluctance to use the Strait has been driven primarily by the threat of attacks, not legal restrictions.
In fact, increased U.S. naval presence could serve as reassurance.
Recent movements of U.S. warships, including destroyers, are seen as part of a broader effort to restore confidence in the safety of the route. Additional steps, such as mine-clearing operations and clearer communication with the shipping industry, are also expected to play a role. Only when those safety concerns are addressed will traffic begin to return to normal levels.
For now, the situation remains finely balanced.
The blockade may be legal under international law. It may even be strategically calculated. But in a region as sensitive as the Strait of Hormuz, every action carries risk, and even a lawful move can have unpredictable consequences.
