President Trump has one bright red line for Iran's nuclear program and some areas of flexibility as he weighs military strikes or a possible deal in the coming days.

U.S. President Donald Trump, who scrapped an earlier nuclear agreement with Iran during his first term, has repeatedly threatened to use force to compel Iran to agree to constrain its nuclear program. Iran has said it would respond with an attack of its own. Trump has also threatened Iran over the killing of protesters.

US President Donald Trump delivered his latest ultimatum to Iran on Thursday during a meeting of the Board of Peace, the Middle East coalition Trump formed to stabilise a region he could soon plunge into a new, weeks-long war.

European stocks opened higher on Friday as traders parsed more earnings reports and monitored tensions between the U.S. and Iran.

Iran and the United States are waging gunboat diplomacy as talks over Tehran’s nuclear program hang in the balance.

The Iranian leadership is weighing up whether resisting US demands is the best option for its survival.

The United States has put military forces in place in the Middle East for a potential strike on Iran but President Donald Trump is weighing options.

As Trump pressures Iran, he's spoken of an "armada" heading for the Mideast, but there's another massive movement of American fire power in the air.