Iran and the United States traded fresh military strikes on Sunday while accusing each other of violating the peace memorandum signed less than two weeks ago, raising new concerns over the future of their ceasefire.

Iran's Islamic Revolutionary Guard Corps (IRGC) said its forces fired ballistic missiles and drones at US military facilities in Kuwait and Bahrain early Sunday in retaliation for recent US strikes against five Iranian coastal posts.

In a statement on its official news outlet Sepah News, the IRGC said its navy and aerospace force launched a joint retaliatory attack against the US Army's eight important infrastructure facilities at the Ali Al Salem Air Base in Kuwait and the US Fifth Fleet in Bahrain.

It added that the United States had attacked five Iranian coastal posts early Sunday under the pretext of responding to the IRGC Navy's "confrontation with a violating ship."

The IRGC said from now on, vessels seeking unauthorized passage through the Strait of Hormuz would be dealt with more powerfully than in the past, and any potential aggression under any pretext would be met with a crushing response.

It warned that violating the ceasefire is in breach of a recently signed peace memorandum of understanding (MoU) between Iran and the United States on ending the war, and would lead to the complete cessation of all diplomatic processes.

It added that under the peace MoU, Iran is responsible for managing maritime traffic in the Strait of Hormuz.

Kuwait on Sunday strongly condemned what it described as repeated Iranian attacks targeting its territory, saying the latest attack violated its sovereignty and threatened regional efforts to ease tensions.

In a statement posted on X, Kuwait's Ministry of Foreign Affairs described the attack as a "flagrant violation" of the country's sovereignty, saying it posed a direct threat to Kuwait's security and stability as well as to the safety of its citizens and residents.

The country's Armed Forces also said they had intercepted two ballistic missiles after detecting them in the Gulf country's airspace, with no casualties or material damage reported.

Meanwhile, Bahrain's Interior Ministry said a residential building in Muharraq Governorate was damaged as a result of an Iranian attack.

The ministry said on X that no casualties were reported in the attack, adding that authorities had begun taking necessary measures at the site.

Several explosions were also reported in Iran's southern Hormozgan province and on Qeshm Island early Sunday, according to Iranian media.

The US Central Command (CENTCOM) said in a post on X on the same day that its forces had conducted "additional strikes against multiple targets in Iran," adding that the strikes were in response to an earlier drone attack by Iranian forces against a Panama-flagged tanker transiting near the Strait of Hormuz.

CENTCOM stressed that its forces' strikes were in "direct response to continued Iranian aggression against commercial shipping," noting that "US military aircraft targeted Iranian military surveillance infrastructure, communication systems, air defense sites, drone storage facilities and minelayer capabilities."

Similar clashes occurred early Saturday when CENTCOM claimed air strikes against Iran's southern coasts, and the IRGC said its naval forces had, in retaliation, struck the US military positions in West Asia.

On June 17, Iran and the United States signed an MoU on ending the conflict across the region, including in Lebanon. The two countries are currently in negotiations to reach a final agreement.

Iranian Foreign Minister Seyed Abbas Araghchi met his Iraqi counterpart Fuad Hussein on Sunday during a visit to Baghdad to discuss bilateral ties and regional security.

According to a statement released by Iraq's Foreign Ministry, Hussein called for disputes to be resolved through dialogue, saying Baghdad maintains good relations with both Tehran and Washington and is willing to work with both sides to help bring the regional conflict to an end.

Araghchi briefed Hussein on the latest progress in the negotiations with the US, as well as issues related to the Strait of Hormuz, which he described as being under Iran's jurisdiction. He added that Iran and Iraq would coordinate arrangements for part of the funeral ceremonies of Iran's late Supreme Leader Ali Khamenei to be held in Iraq.

(With input from Xinhua)