Iran Warns Trump: US Naval Blockade in Strait of Hormuz Will Fail

The United States military began implementing a naval blockade of the Strait of Hormuz on April 13, 2026, following the collapse of ceasefire negotiations between the U.S. And Iran. The action comes after face-to-face peace talks held in Islamabad, Pakistan, ended without a resolution over the weekend.

U.S. Central Command announced that the blockade was scheduled to begin at 10 a.m. ET on April 13, 2026. The military stated that additional information would be provided to commercial vessels before the operation commenced.

President Donald Trump announced the decision on Sunday, April 12, 2026, via his social media platform, Truth Social. He stated that the U.S. Navy would begin the process of blockading ships attempting to enter or leave the Strait of Hormuz, asserting that other countries would be involved in the effort. Trump described the move as a response to what he called an Illegal Act of EXTORTION by Iran, referring to the Iranian practice of charging tolls to tankers.

Failure of Peace Negotiations

The blockade follows 21 hours of direct negotiations in Pakistan aimed at ending the war between the two nations. The U.S. Team was led by Vice-President JD Vance.

According to Vance, the talks failed because Iran refused to abandon the possibility of developing nuclear weapons. This issue remained the primary sticking point throughout the negotiations. Iranian delegates countered that the United States needed to take further steps to win their trust before an agreement could be reached.

Scope of the Naval Operation

While President Trump’s initial announcement suggested a broad enforcement action against all ships entering or leaving the strait, U.S. Central Command later provided a more limited scope for the operation. CENTCOM stated that the U.S. Military will not impede vessels transiting the strait to and from non-Iranian ports.

The U.S. Navy’s primary focus will be to seek and interdict every vessel in International Waters that has paid a toll to Iran.

Iranian Response and Ceasefire Status

Iran has warned that the U.S. Move will be met with a forceful response. The Iranian Revolutionary Guards declared that if any warships approach the strait to enforce the blockade, the action will be viewed as a breach of the current ceasefire and will be dealt with strongly.

The Revolutionary Guards noted that a naval blockade is typically considered an act of war.

Additional Military Threats

In addition to the naval blockade, President Trump has threatened to resume limited military strikes within Iran to break the stalemate in peace talks. These threats specifically target critical Iranian infrastructure.

The targeted infrastructure includes:

• Power plants
• Water treatment facilities
• Bridges

Trump stated these strikes would be carried out if Tehran does not agree to abandon its nuclear weapons program.

The escalation in the strategic waterway has raised concerns regarding global oil supplies and the potential for a further increase in oil prices, specifically affecting Brent crude.