Donald Trump said on Sunday that U.S. forces would start blockading maritime traffic to Iranian ports, escalating tensions after negotiations failed to produce an agreement to end the conflict, putting a fragile two-week ceasefire at risk.

US Central Command said the blockade would take effect at 10 a.m. ET (1400 GMT) and would apply to all vessels entering or leaving Iranian ports across the Arabian Gulf and the Gulf of Oman. It added that freedom of navigation through Hormuz to non-Iranian destinations would not be impeded.

Shipping data showed several vessels adjusting routes in response. The Malta-flagged very large crude carrier Agios Fanourios I reversed course after attempting to enter the Gulf and is now anchored near the Gulf of Oman.

Other tankers, including the Pakistan-flagged Shalamar and Khairpur, continued operations, heading toward the United Arab Emirates and Kuwait respectively to load cargo.

The Liberia-flagged VLCC Mombasa B also transited the strait earlier on Sunday and is currently ballasting in the Gulf, according to vessel tracking data.Iran’s Islamic Revolutionary Guard Corps warned that any military vessels approaching the strait would be considered a violation of the ceasefire and would face a “decisive” response.

Despite rising tensions, shipping data showed that three fully laden supertankers passed through the strait on Saturday, appearing to be among the first vessels to exit the Gulf since the ceasefire agreement was reached last week.

The 15-member council had been due to vote Friday on a proposal introduced by Bahrain, but the session was deferred, with diplomatic sources citing the observance of Good Friday as the official reason. No new date for the vote has been announced.

The draft resolution, backed by the United States, would permit member states, acting individually or through multinational coalitions, to use “all defensive means necessary” to ensure safe passage through the strait and deter interference with international navigation. The mandate would apply for an initial period of at least six months.

The proposal comes as Iran has effectively constrained traffic through the vital shipping lane in response to U.S.-Israeli military actions, disrupting global energy flows. The strait typically carries around one-fifth of the world’s oil and liquefied natural gas supplies, making it a critical artery for global trade.

Bahrain’s UN ambassador Jamal Alrowaiei described the resolution as timely, warning of the wider economic impact of disruptions to shipping. However, the measure faces resistance from key council members, including Russia and China, both of which hold veto power and have expressed concerns that authorizing force could escalate the conflict.

Chinese envoy Fu Cong said such authorization risks legitimizing “indiscriminate use of force,” while Russia has criticized what it views as unilateral approaches to the crisis. France, another permanent member, has signaled cautious support after revisions emphasized the defensive nature of the proposal.

Analysts say the resolution faces significant hurdles. Daniel Forti of the International Crisis Group said it is unlikely to gain approval without broader consensus, particularly if it does not address underlying political drivers of the conflict.

Separately, Donald Trump said countries facing fuel shortages should secure their own supplies in the region, adding that U.S. forces would not intervene on their behalf.

Iran’s Foreign Minister Abbas Araghchi warned against any “provocative action” at the Security Council, cautioning that further steps could intensify the situation.The draft reflects rare consideration of force authorization by the council, underscoring the severity of the disruption to global energy markets and maritime security.

The proposal, endorsed by lawmakers on a security panel, includes “financial arrangements and rial toll systems” aimed at asserting Iran’s sovereign role, according to state television.

The plan also provide for cooperation with Oman, which shares control of the waterway’s southern side.Strategic chokepoint under strainThe Strait of Hormuz, a key route for global oil and gas shipments, has been effectively constrained since the onset of the U.S.-Israeli war with Iran.

Tehran has limited passage for vessels it says are linked to adversaries, tightening oversight of maritime traffic.Iran’s Revolutionary Guard Corps has maintained a security presence in the area, with maritime monitors reporting that only a limited number of ships are currently transiting daily, often via routes approved by Iranian authorities.

Iranian officials have argued that transit fees are necessary to ensure the safety of shipping through the strait. The chairman of a parliamentary civil affairs committee, cited by Fars news agency, said vessels should contribute financially to security arrangements in the corridor.

The proposal signals a potential shift toward formalizing Iran’s control over access to the waterway, raising concerns among energy markets already strained by supply disruptions.Limited passage amid diplomatic signalsSome vessels have been allowed to pass in recent days.

Ishaq Dar said Iran had permitted 20 additional ships to transit the strait, a move he described as supporting regional stability.U.S. President Donald Trump said last week that 10 oil tankers were allowed through as a goodwill gesture during ongoing tensions, though details of any linked negotiations remain unclear.

The extent and timing of the proposed toll system’s implementation have not been specified.

Speaking at the Saudi-backed Future Investment Initiative summit in Miami, Trump said, “We’re negotiating now but they have to open it up,” referring to the vital maritime route that has been largely disrupted during the war.

The Strait of Hormuz, through which roughly one-fifth of global oil supply typically passes, has seen sharply reduced traffic since the conflict began, contributing to rising energy prices and global market uncertainty.

Trump said Iran was “on the run” and repeated claims that its military and nuclear capabilities had been significantly weakened, despite Tehran’s denials.U.S. Secretary of State Marco Rubio earlier warned that Iran could seek to impose a “tolling system” on vessels transiting the strait, raising concerns over long-term disruptions to global shipping.

Trump praised Mohammed bin Salman and other Gulf leaders from the United Arab Emirates, Qatar and Bahrain for what he described as efforts to promote regional stability.Calling the Saudi crown prince a “close friend,” Trump said Riyadh had played a constructive role in ongoing diplomatic outreach.

The U.S. president also questioned Washington’s commitment to NATO, suggesting the United States might reconsider its obligations if European allies continued to withhold support in the Iran conflict.

“We would have always been there for them but now I guess we don’t have to be,” Trump said, framing the issue as one of burden-sharing within the alliance.

The conflict, now entering its fourth week, has disrupted shipping through the Hormuz corridor, with only limited vessel movement reported amid heightened security risks and ongoing military activity in the region.

Trump praised U.S. military forces for executing aerial attacks targeting the Houthis’ bases, leadership, and missile defenses.

The United States launched a series of airstrikes on Houthi-controlled areas in Yemen on Saturday, with President Donald Trump pledging to use “overwhelming lethal force” until the Iran-backed rebel group ceases its attacks on commercial and naval vessels in the region.

Trump also issued a stern warning to Iran, demanding that it withdraw support for the Houthis or face consequences. “We will hold Iran fully accountable for the actions of its proxy,” Trump declared.

Military Action and Presidential Statement

In a social media post, Trump praised U.S. military forces for executing aerial attacks targeting the Houthis’ bases, leadership, and missile defenses. He emphasized that the strikes were necessary to protect American interests and restore navigational freedom in the region.

“Our brave Warfighters are right now carrying out aerial attacks on the terrorists’ bases, leaders, and missile defenses to protect American shipping, air, and naval assets, and to restore Navigational Freedom,” Trump wrote. “No terrorist force will stop American commercial and naval vessels from freely sailing the Waterways of the World.”

The president announced the strikes while spending the day at his Trump International Golf Club in West Palm Beach, Florida.

Casualties and Damage

The first U.S. strikes since Trump’s return to office reportedly resulted in at least 31 deaths and 101 injuries, according to Houthi sources. The casualties are said to include women and children.

The strikes targeted multiple locations, including the capital city of Sanaa, the northern province of Saada, and military sites near the Sanaa airport. Additional attacks were reported in the provinces of Hodeida, Bayda, and Marib.

Images circulating on social media showed plumes of black smoke rising over the affected areas.

Reasons Behind the Airstrikes

The strikes follow the Houthis’ recent announcement that they would resume attacks on Israeli-linked vessels in retaliation for Israel’s blockade of Gaza. The group had warned of targeting vessels in the Red Sea, the Gulf of Aden, the Bab el-Mandeb Strait, and the Arabian Sea.

Since the start of the Israel-Hamas war in late 2023, the Houthis have been responsible for over 100 attacks on merchant vessels, sinking two ships and killing four sailors.

The United States, Israel, and the United Kingdom had previously conducted joint strikes against Houthi targets, but Saturday’s operation was executed solely by U.S. forces.

Houthi and Iranian Response

Nasruddin Amer, deputy head of the Houthi media office, vowed that the airstrikes would not deter their operations and warned of retaliation against the U.S. Mohamed Abdulsalam, a spokesperson for the group, dismissed Trump’s claims about threats to international shipping as “false and misleading.”

Iran, which has long provided financial and military support to the Houthis, has not yet issued an official response to the latest strikes.

Broader Implications

The airstrikes come amid escalating tensions between Washington and Tehran. Just two weeks ago, Trump sent a letter to Iranian leaders proposing a pathway for renewed negotiations on Iran’s nuclear program. The president has made clear that he will not allow Iran to develop a nuclear weapon, further raising the stakes in the region.

As the conflict in Yemen intensifies, the duration and extent of U.S. military action remain uncertain. A U.S. official, speaking to the Associated Press, confirmed that strikes will continue but provided no timeline for their conclusion.