Multiple web search results report that the US military is expanding its efforts beyond a simple blockade to track, intercept, and board vessels linked to Iran or supporting Tehran in international waters. One source mentions the US preparing to board Iran-linked ships as part of a sweeping naval blockade launched on April 13, 2026, targeting vessels in the Strait of Hormuz, Gulf of Oman, and Arabian Sea. Another source notes the US has widened its efforts beyond the blockade of Iran's ports to stop any ship tied to Tehran or those suspected of carrying supplies that could help its government.

Web search results mention a strategy involving economic pressure. One source explicitly references the US launching 'Operation Economic Fury' to obstruct Iran's revenue, and another source mentions the US supplementing its military operation against Iran, codenamed 'Epic Fury,' with maximum economic pressure. The claim regarding the US Navy beginning implementation in the coming days is supported by the general timing mentioned across multiple reports.

Two independent web search results attribute a warning about expanding operations beyond the region to the Chairman of the Joint Chiefs of Staff, Gen. Dan Caine. One source states, 'Chairman of the Joint Chiefs of Staff Gen. Dan Caine already warned earlier this week that the US could expand operations against Iran’s maritime network beyond the region.' Another source confirms Dan Caine explained that US military assets will stop vessels elsewhere in the world supporting the Islamic Republic.

Multiple web search results confirm the scope of the pursuit. Sources state the joint force will actively pursue any Iranian-flagged vessel or any vessel attempting to provide material support to Iran, and that this campaign is not limited to the Persian Gulf, referencing the pursuit in other areas of responsibility.

Web search results confirm the blockade targets Iranian ports. One source states the blockade began on April 13, 2026, and is set to encompass 'the entirety of the Iranian coastline,' warning about vessels entering or departing the blockaded area. Another source mentions the US Central Command preparing to impose a blockade on vessels entering and exiting Iranian ports starting on Monday morning.

Multiple web search results confirm that President Donald Trump threatened maintaining the blockade until an agreement was reached, and threatening further action if talks failed. One source notes Trump said the US would interdict every vessel in international waters that paid a toll to Iran, and another confirms he threatened additional military action after peace talks failed.