The US will use diplomacy and work with its partners to “expel every last Iranian boot” from Syria, Secretary of State Mike Pompeo has vowed.
Mr Pompeo warned there would be no US reconstruction assistance for areas controlled by President Bashar al-Assad until Iran and its proxies had left.
He was speaking in Cairo three weeks after President Donald Trump announced US troops were pulling out of Syria.
The decision shocked US allies and sparked strong criticism in Washington.