It's a mystery who launched the latest airstrikes against Iran

Gulf Arab states, which Iran has targeted repeatedly since the war began Feb. 28, did not immediately respond to requests for comment Friday about the strikes. The attacks come as those Gulf nations and the U.S. insist that the Strait of Hormuz, a vital waterway for world energy markets, must be open and free to ships to transit.

Iran says that the strait must now be under its sole control and that vessels should begin to pay fees to Tehran — even though the world for decades has considered it an international waterway. About a fifth of all traded oil and natural gas passed through the waterway before the war.

Iran's grip on the strait during the conflict led to an global energy crisis, though oil prices have sharply dropped since wartime highs of $120 a barrel.

Israel, which took part in the Iran war, also has not claimed any recent attacks on Iran.

Unclaimed strikes came after US ended its attacks

The U.S. military's Central Command said Thursday around 6:30 a.m. local Iran time that it had concluded a round of strikes that hit 90 targets. Shortly after that, Iranian news outlets and state media reported a series of airstrikes and explosions targeting the country's Bushehr and Sistan and Baluchestan provinces, the cities of Ahvaz and Chabahar and other areas.

Central Command did not respond to a request for comment about the additional strikes.

Iran responded to the strikes Thursday by launching a wider volley of attacks across the Mideast, targeting Bahrain, Jordan, Kuwait and Qatar. Missile alert sirens sounded in the four countries, sending people to seek shelter. One person was reportedly hurt in Kuwait as air defense systems targeted the incoming fire across the region.

The exchange of strikes again tested a shaky ceasefire deal between Tehran and Washington. U.S. President Donald Trump reiterated on social media Friday that he views the interim deal as "OVER!" But he said the U.S. would continue talks aimed at putting a permanent end to the war.

U.S. Central Command spokesperson Capt. Tim Hawkins said there were "no operational updates" after Trump's pronouncement about the ceasefire.

Iran's U.N. envoy told reporters at the world body's headquarters that his country remains committed to implementing the agreement if the U.S. "fully and faithfully complies with its own obligations." And if not, "Iran will no longer be bound by its obligations" under the agreement, Ambassador Amir Saeid Iravani said.

The leader of the UAE, Sheikh Mohammed bin Zayed Al Nahyan, traveled to Kuwait immediately after the Iranian attack for a meeting with the small, oil-rich nation's ruling emir. Gulf Arab countries also held calls with Qatar's foreign minister. He has been deeply involved, along with Pakistan, in mediating Iran-U.S. talks.

Pakistani Prime Minister Shehbaz Sharif said he spoke separately Friday with Iranian President Masoud Pezeshkian and with Qatar's ruling emir, Sheikh Tamim bin Hamad Al Thani, and stressed to both the need for restraint and diplomacy.

During the Iran war, officials said both Saudi Arabia and the UAE launched airstrikes targeting Iran, after Tehran struck energy sites in their countries.

Israel, which under Prime Minister Benjamin Netanyahu has engaged in an intense campaign against Iran, has not attacked the Islamic Republic since June. Israel also broadly immediately claims its attacks on Iran.

Israel's government said Netanyahu spoke with Trump Thursday night and got an update "on American moves in the Gulf."

Israel Katz, Israel's defense minister, also renewed threats that his nation stood ready to confront Iran if needed.

"If we will have to return, we will return with even greater force," Katz told a military ceremony.

Iran keeps up its threats

On Friday, Iranian state media quoted Esmail Kousari, a member of the Iranian parliament's national security committee and a former commander in the paramilitary Revolutionary Guard, as warning the UAE would "pay the price for its cooperation with the United States." He accused the Emirates of having a "behind-the-scenes" role in the recent U.S. attacks.

Iran repeatedly accused Gulf Arab states of actively supporting the U.S. war effort, something they denied during the war. The U.S. since the 1991 Gulf War has maintained military bases across the Gulf Arab states, including in Bahrain, which is home to the U.S. Navy's 5th Fleet headquarters.

Meanwhile, Iran insists it must be the sole controller of the Strait of Hormuz. But the U.S. continues to urge mariners to travel on a southern route through Oman's territorial waters to avoid Iran.

The Joint Maritime Information Center, a multinational body overseen by the U.S. Navy, issued a new advisory Friday urging ships to travel that route. A similar message sparked an Iranian attack on Tuesday that saw three vessels hit.

"Notwithstanding recent unprovoked attacks on merchant vessels, mariners are reminded that the southern route of the (strait) has been expanded and remains available for all traffic," the maritime center said.

Twenty-two ships transited the strait Thursday, down from 30 Wednesday and 41 on Tuesday, according to data and analytics company Kpler.