Donald Trump was last night poised to join Israel's attacks on Iran as he demanded Tehran's 'unconditional surrender'.

The US President also boasted that his country could assassinate Ayatollah Khamenei – Iran's Supreme Leader – but the 'easy target' was safe 'for now'.

America is assembling an armada of warships and fleets of fighter jets in the region ahead of possible military action.

And US strikes on targets inside Iran, including nuclear facilities, were 'on the table' during a meeting of his National Security Council in the White House Situation Room last night.

At least 224 people have been killed in Iran since Israel began its bombing campaign last week in an attempt to stop the regime from producing a nuclear weapon.