By Jana Choukeir and Nayera Abdallah
DUBAI, July 16 (Reuters) - Iran said on Thursday that the Strait of Hormuz was an inviolable "red line", warning that if U.S. President Donald Trump carried out his threat to attack Iran's infrastructure, it would strike all infrastructure across the Gulf region.
The U.S. launched a fifth night of attacks on Wednesday and reimposed a naval blockade of Iran's ports, which Washington says is aimed at reopening the Strait of Hormuz, closed by Iran last Saturday after a fragile truce collapsed.
