US underestimated Iran's strategic defence through Strait of Hormuz: Report
Mar 13, 2026
Washington DC [US], March 13 : The administration of US President Donald Trump reportedly underestimated the likelihood that Iran would close the strategic Strait of Hormuz in response to US military strikes, CNN reported, citing multiple sources familiar with internal planning discussions.
CNN sources revealed that while planning for the ongoing military operation, the Pentagon and the National Security Council did not fully anticipate that Iran would attempt to close the waterway, despite long-standing contingency plans developed by the US military for such a scenario.
Officials from the US Departments of Energy and Treasury were present at some planning meetings before the operation began, but CNN sources said the detailed economic forecasts and interagency analysis that typically shape major decisions were not central to the discussions.
Earlier, Iran's new Supreme Leader, Mojtaba Khamenei, indicated that the closure of the Strait would remain a pressure tactic, according to remarks broadcast on Iranian state television.
"Dear fighter brothers! The desire of the masses of the people is the continuation of effective and regret-inducing defence. Furthermore, the leverage of blocking the Strait of Hormuz must certainly continue to be used," he said.
Khamenei said that Iran had identified sites which he claimed were vulnerable for future strikes from the Islamis Republic.
"Studies have been conducted regarding the opening of additional fronts in areas where the enemy has negligible experience and would be highly vulnerable, and their activation will be carried out if the state of war persists and in accordance with the observance of interests," he said.
Later, Iran's UN Ambassador Amir Saeid Iravani however stated that Tehran has no intention to close the Strait of Hormuz amid the West Asia conflict but added that it is their "right to preserve the peace and security in this waterway."
Amir Saeid Iravani also said Iran respects and remains committed to the principles of freedom of navigation under the law of the sea, adding that the situation of the Strait of Hormuz is "not the result" of Iran's action.
"We are not going to close the Strait of Hormuz, but it is our inherent right to preserve the peace and security in this waterway, and it is our right," he said, speaking at the UN stakeout.
"Iran has no choice but to exercise its inherent right to self-defence under the UN Charter and international law. Iran fully respects and remains committed to the principles of freedom of navigation under the law of the sea. However, the current situation in the region, including in the Strait of Hormuz, is not the result of Iran's lawful exercise of its right of self-defence," he added.
In recent days, Iran has intensified its restrictions on the passage of ships through the Strait of Hormuz amid ongoing US-Israeli strikes. Iran says vessels not serving the interests of the United States and Israel can sail through safely.