US President Donald Trump warned Iran on April 28, 2026, at around 10:00 AM EST to act quickly as nuclear deal negotiations between Washington and Tehran remain stalled. The statement highlights rising US-Iran tensions, ongoing diplomatic failure, and stricter American control over the Strait of Hormuz. Trump made it clear that the United States expects Iran to respond with a workable proposal, while rejecting Tehran’s latest plan.

Trump shared his warning on Truth Social, saying Iran must “get smart soon” and accusing the country of failing to agree on a nonnuclear deal. His post included a strong visual message, signaling a shift toward a tougher stance. This comes as diplomatic efforts have failed to produce progress, increasing uncertainty in the region.

According to United States Central Command, a naval blockade has been active since April 13, following unsuccessful talks held in Pakistan. The blockade affects ships entering and leaving Iranian ports, giving the US tighter control over one of the world’s most important oil routes. This move has raised concerns about global trade and energy supply disruptions.

Efforts to restart indirect negotiations in Islamabad have not succeeded. The US delegation cancelled its planned visit last weekend, with officials choosing to wait for Iran to submit a revised proposal. Reports suggest Iran has asked for the removal of the naval blockade, reopening of the Strait of Hormuz, and a long-term ceasefire linked to its nuclear programme. However, these demands were rejected by Washington, which continues to prioritize its core security concerns.

The situation remains tense, with both sides holding firm positions. While Iran seeks relief from economic and military pressure, the United States insists on strict conditions before any agreement can be reached. Analysts say the deadlock could lead to further escalation if diplomatic channels remain inactive.