US shifts Iran policy as Trump administration revives aggressive messaging toward Tehran, contrasting sharply with previous diplomatic approaches.

U.S. President Donald Trump threatened on Friday to come to the aid of protesters in Iran if security forces fired on them, days into unrest that has left several dead and posed the biggest internal threat to Iranian authorities in years.

TEHRAN, Iran (AP) — Iranian President Masoud Pezeshkian on Tuesday said his country’s answer to an attack would be harsh, which appeared to be in response to a warning by U.S. President Donald Trump over reconstruction of Iran’s nuclear program.

Since the seizure of Venezuelan President Nicolás Maduro by US forces at the weekend, US President Donald Trump and members of his administration have issued warnings to several other governments — including those of Colombia,