Iranian and US forces have continued to exchange strikes despite an April ceasefire, fuelling tensions across the Gulf and the Strait of Hormuz, while raising fears the fragile truce could unravel as mediation efforts continue in Doha.
On Monday, the United States Central Command (CENTCOM) said it carried out new strikes on southern Iran, targeting missile sites and boats allegedly attempting to place naval mines. It said the attacks had been carried out in “self-defence” to protect US troops from threats posed by Iranian forces.
On Tuesday, the Islamic Revolutionary Guard Corps (IRGC) said it had downed a US drone and fired at a jet and another drone that entered Iranian airspace, according to state media. Iran also said it retained the “legitimate and definite” right to respond to any violations of the ceasefire.
Since a temporary ceasefire was announced on April 8, Iran has continued to control shipping through the Strait of Hormuz, through which one-fifth of the world’s oil and natural gas supplies are shipped in peacetime, while US forces have enforced a corresponding blockade on Iranian ports. Negotiations for a long-term ceasefire are ongoing, but repeated military flare-ups in the meantime underscore the deep mistrust between the two sides, experts say, as Iran and the US jostle for leverage amid a back-and-forth of peace proposals from both sides.
Here is what has happened since the ceasefire:
The US and Israel launched strikes on Iran on February 28, as negotiations between Washington and Tehran progressed via mediators, amid claims that Iran was developing nuclear weapons. While the US and Israel provided no evidence to support their allegation, Iran continued to deny. It responded with missiles and drones targeting Israel and US military and infrastructure assets in the Gulf region and the wider Middle East.
On April 8, following mediation by Pakistan, the two sides agreed to a two-week pause in fighting to allow for further negotiations. Delegations from both countries met in Islamabad on April 11 and 12, but failed to reach a broader agreement, with draft proposals exchanged through Pakistani mediators in an attempt to end the conflict. The ceasefire was extended to allow for more proposals to be exchanged.
At least 3,468 people – aged between eight months and 88 years – have been killed in US-Israeli attacks on Iran since February 28, according to its Ministry of Health. They included seven infants, 376 children and 496 women.
At least 26 Israelis have been killed and 7,791 wounded in Iranian attacks, while the US military has confirmed 13 combat-related deaths across the region. Dozens of people were also killed in the Gulf countries. Lebanon remains the worst hit in the region, where, despite a ceasefire, Israel continues to carry out attacks amid its ground invasion. More than 3,200 people have been killed, according to the Lebanese Ministry of Public Health.
The ceasefire faced near-immediate strain when Kuwait said seven drones entered its airspace on April 10. It accused Iran and allied armed groups of the attacks.
Kuwait’s Ministry of Foreign Affairs condemned what it described as violations of its sovereignty and airspace. Separately, the US Department of State accused Iran-linked armed groups in Iraq of launching attacks from Iraqi territory. However, Iran denied any role in the attacks, saying it had not targeted any Gulf country since the ceasefire began.
Four days into the ceasefire – and following the collapse of direct talks in Islamabad – the US announced a naval blockade targeting maritime traffic entering and leaving Iranian ports, after talks mediated by Pakistan collapsed. The US argued that Iran had benefitted from continuing to export oil, while the Strait of Hormuz was closed to nearly all other shipping.
The blockade formally came into effect the following day, although Washington said vessels travelling to non-Iranian ports would be allowed past.
Iran condemned the move as “illegal”, warning that ports in the Gulf region would not be safe if Iranian ports were threatened.
The blockade came after Iran tightened its control over shipping in the Strait of Hormuz, restricting some foreign ships while allowing passage to countries it viewed as friendly.
The International Maritime Organization has said no country has the right to block shipping in international transit straits.
On April 18, Iranian forces fired on two Indian ships in the Strait of Hormuz, which it said did not have permission to pass.
Maritime tensions escalated further on April 20, when US forces seized an Iranian container ship near the Gulf in a move Iran described as an “act of piracy“. CENTCOM and US President Donald Trump said the vessel, the Iran-flagged Touska, had ignored orders to withdraw from its route through the Strait of Hormuz.
Days later, on April 22, the IRGC fired on three ships in the strait and seized two foreign container vessels, the Panama-flagged MSC Francesca and the Liberian-flagged Epaminondas, saying they lacked authorisation to transit the waterway.
The incident came the day after Trump extended the ceasefire while maintaining the US naval blockade on Iranian ports.
On May 4, the United Arab Emirates accused Iran of launching missiles and drones at the country, triggering a fire at an oil refinery in Fujairah and wounding three Indian nationals.
The UAE said its air defences had intercepted 12 ballistic missiles, three cruise missiles and four drones launched from Iran. Abu Dhabi condemned what it described as “unprovoked Iranian attacks” on civilian infrastructure.
The UAE said the attacks were the first on its territory since the ceasefire had commenced on April 8. The strikes came as Trump launched a new effort to escort stranded oil tankers through the Strait of Hormuz, much of which had remained closed since the war began.
Iran’s military warned commercial vessels against accepting US escorts and threatened to attack if they entered the strait. Trump abandoned the effort after one day.
On May 14, an Indian cargo ship transporting livestock from Africa to the UAE sank off the coast of Oman, while the United Kingdom Maritime Trade Operations reported that “unauthorised personnel” boarded another vessel near Fujairah and redirected it towards Iran.
India condemned the attack, saying commercial shipping and civilian sailors continued to be targeted despite the ceasefire.
A drone strike has sparked a fire on the perimeter of the Barakah Nuclear Energy Plant in the United Arab Emirates (UAE), raising new concerns over a potential new regional escalation amid a fragile ceasefire between Iran and the United States.
Authorities in Abu Dhabi said the blaze broke out at an electrical generator outside the plant’s inner perimeter in the Al Dhafra region on Sunday. No injuries were reported, and officials said radiation levels remained normal. The UAE did not specifically blame Iran, but said the drones had been launched from the “western border”.
Saudi Arabia also said it intercepted three drones fired from Iraqi airspace. The Saudi defence ministry said it would take “necessary operational measures” in the event of any attempt to violate its sovereignty and security.
Diplomatic efforts to secure a broader peace agreement are continuing. Senior officials from Iran travelled to Qatar this week for negotiations aimed at ending the US-Israel war on Iran, with discussions reportedly focused on the release of frozen Iranian assets.
Iran is also seeking sanctions relief for its oil and petrochemical exports during a proposed 60-day period to hold talks about its nuclear programme. A further proposed 30-day timeframe would see the US lift its blockade of Iranian oil ports while Tehran restores commercial shipping through the Strait of Hormuz.
Tehran is also seeking guarantees related to a ceasefire in Lebanon, where Israel continues to strike and occupy towns and villages in the south of the country. Meanwhile, Trump is reportedly attempting to link the negotiations to efforts for Saudi Arabia, Qatar and Pakistan to normalise ties with Israel under the Abraham Accords.
Analysts say any agreement remains politically sensitive, with deep distrust persisting as all sides seek leverage to secure a deal they can present domestically as a victory.
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