What to know about naval blockades as U.S. patrols Strait of Hormuz : NPR

Key Points:

• The U.S. Navy has initiated a blockade of the Strait of Hormuz to cut off Iran's oil exports and increase economic pressure amid ongoing conflict, though the operation's sustainability and effectiveness remain uncertain.
• Enforcing such a blockade is resource-intensive and complex, requiring continuous naval patrols and monitoring of high volumes of maritime traffic, which may exceed the Navy's capacity to fully control.
• Historical naval blockades show mixed results: while some, like the U.S. submarine campaign against Japan in WWII, were highly effective, others failed to fully achieve their goals or caused unintended economic harm to civilian populations.
• Blockades often produce unpredictable outcomes, sometimes damaging sectors other than the intended military or economic targets, as seen in WWI Germany where agricultural production suffered due to restricted imports.
• The success of the U.S. strategy against Iran depends on how effectively and for how long the blockade can be maintained, with potential impacts on Iran's oil revenue and possibly its food supply.