The crews of all three merchant vessels seized by the U.S. military over the past week are still in U.S. custody.
The American leader issued the stark threat Tuesday, about 12 hours ahead of his deadline for Iran to agree to a deal.
Israel has attacked a major petrochemical plant in Iran's South Pars natural gas field and killed a top Revolutionary Guard commander.
Trump expressed frustration with allies who have been unwilling to do more to support the U.S. war effort, telling them to “go get your own oil.”
The death toll from the war is now 1,900+ people in Iran and nearly 1,100 people in Lebanon, with dozens more killed in Israel.
Israel’s defense minister says the military killed top Iranian security official Ali Larijani in an overnight strike.
Iran has attacked commercial ships across the Persian Gulf and targeted Dubai International Airport.
The conflict, now in its second week, is ensnaring countries and infrastructure critical to the production and transportation of oil and gas worldwide.
Qatari Foreign Ministry spokesman Majed Al Ansari vowed that Iranian attacks on the gas-rich country “will not go unanswered.”
The assassination of the second leader of the Islamic Republic, who had no designated successor, would throw its future into doubt.