US President Donald Trump faces a Friday deadline to end the war or make the case to Congress for extending it, according to Reuters.

Under the 1973 War Powers Resolution, the president can wage military action for only 60 days before ending it, coming to Congress for authorisation or seeking a 30-day extension due to “unavoidable military necessity regarding the safety of United States Armed Forces”.

Analysts and congressional aides expect Trump to either notify Congress that he plans a 30-day extension or disregard the deadline, with his administration arguing that a current ceasefire with Tehran marked an end to the conflict.