Trump Threatens Strikes on Iran's Power Plants Next Week if No Deal Is Reached

US President Donald Trump has warned that the United States will broaden its military campaign against Iran next week by targeting power plants and bridges unless Tehran agrees to negotiate.

Speaking to Fox News on Tuesday, Trump said, "Next week it gets really bad for them because next week comes the power plants. Next week comes the bridges."

"We're going to knock out all their power plants. We're going to knock out all their bridges unless they get to the table and negotiate," he added.

Trump's remarks came as US forces conducted a fourth consecutive day of strikes on Iran and reinstated a naval blockade of the country's ports.

The ceasefire reached on June 17 has largely broken down, with tensions now centred on control of the strategically important Strait of Hormuz.

When asked how long the US military operation would continue, Trump said, "They'll continue until I say it's enough."