Middle East crisis live: Iran ready to reopen strait of Hormuz within seven days if US lifts blockade, official says

Donald Trump has called on nations to unite to isolate Tehran and bring down global energy prices, as he gave a bellicose defence of his administration’s foreign policy and decision to strike Iran. “I call on all nations to help to enforce the complete economic isolation of Iran ,” the US president said in a speech to the UN general assembly on Tuesday. “If we stand united, we will soon see a world free of the last 51-year menace of Iranian terror … and oil prices will come plummeting down even lower than they were at the start of the conflict.” It comes as numerous US allies have complained about soaring energy prices and growing international instability during his US administration.