The U.S. has reimposed a naval blockade on Iran and intensified its airstrike campaign in retaliation for Tehran's attacks on ships trying to pass through the Strait of Hormuz. Iranian officials said the American strikes on Wednesday hit an Iranian army barracks, killed at least seven troops and wounded hundreds of people across the country. The interim deal to end the conflict has been shredded by days of back-and-forth strikes by the U.S. and Iran across the Middle East and renewed threats to the waterway crucial to global energy supplies. The violence could tip the region back into all-out war.