Iran ups threats over naval blockade, but still talking to U.S.

Iran’s military threatened on Wednesday (April 15, 2026) to shut down the Red Sea trade unless the United States lifted its naval blockade on Tehran’s ports, saying the ceasefire was at risk.

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The warning came as a Pakistani delegation arrived in Tehran bearing a new message from Washington after a first attempt at a peace deal fell flat, with U.S. President Donald Trump indicating talks could resume this week.