U.S. President Donald Trump on Sunday made expletive-laden new threats to escalate strikes on Iran and its infrastructure if it doesn’t open the Strait of Hormuz by his deadline, after American forces rescued an aviator whose Iran-downed plane fell behind enemy lines.

A defiant Iran struck infrastructure targets in neighboring Gulf Arab countries, challenged the U.S. account of the rescue and threatened to restrict another heavily used waterway in the region, the Bab el-Mandeb Strait off the Arabian Peninsula.

In a social media post, Trump vowed to hit Iran’s power plants and bridges and said the country would be “living in Hell” if the Strait of Hormuz, crucial for global trade, isn’t opened by Tuesday. He ended with “Praise be to Allah.”

Trump has issued such deadlines before but extended them when mediators have claimed progress toward ending the war, which has killed thousands, shaken global markets and spiked fuel prices in just over five weeks.

“It seems Trump has become a phenomenon that neither Iranians nor Americans are able to fully analyze,” Iranian Culture Minister Sayed Reza Salihi-Amiri told visiting Associated Press journalists in an interview in Tehran, adding that the president “constantly shifts between contradictory positions.”

Trump says that he's asked 'about 7' countries to join coalition to police Iran's Strait of Hormuz

Both sides have threatened and hit civilian targets like oil fields and desalination plants critical for drinking water. Iran’s U.N. mission called Trump’s threat “clear evidence of intent to commit war crime.”

Iran’s military joint command warned of stepped-up attacks on regional oil and civilian infrastructure if the U.S. and Israel attack such targets there, according to state television.

The laws of armed conflict allow attacks on civilian infrastructure only if the military advantage outweighs the civilian harm, legal scholars say. It’s considered a high bar to clear, and causing excessive suffering to civilians can constitute a war crime. (AP, but headline rephrased)