Bahrain and the UAE also reported attacks resulting in fires, which were put out quickly.
Kuwait has said Iranian drone attacks damaged two power and water desalination plants and sparked a fire at an oil complex, without causing injuries.
Gulf countries have borne the brunt of Tehran’s response to the US and Israeli strikes on Iran since February 28.
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Fatima Abbas Johar Hayat, a spokesperson for Kuwait’s Ministry of Electricity, Water and Renewable Energy, said on Sunday the “criminal aggression” caused “serious material damage” overnight to the two plants and the outage of two electricity-generating units.
The attack is the latest to target civil infrastructure in Kuwait. Other drone attacks overnight caused a fire at the Shuwaikh Oil Sector Complex and “significant damage” to a government office complex.
Reporting from Kuwait City, Al Jazeera’s Malika Traina referred to the incident as “devastating news” because “water desalination here and across the Gulf is extremely important. In Kuwait, around 90 percent of the country’s drinking water comes from these plants”.
Alongside the United Arab Emirates, Kuwait has been at the “epicentre” of Iranian attacks over the past few days, said Al Jazeera’s Victoria Gatenby, reporting from Doha, Qatar.
“The concern here in the region is that if President [Donald] Trump and the Israeli prime minister, Benjamin Netanyahu, follow through on those threats to escalate attacks on Iran, the result may be that Tehran attacks similar facilities here in the Gulf,” said Gatenby.
Gulf patience is not ‘unlimited’
Bahrain also faced Iranian attacks on Sunday.
The country’s national oil company, Bapco Energies, said an oil tank at one of its storage facilities caught fire following an Iranian attack, but that the blaze was extinguished soon.
It said no one was injured in the incident and that the damage was being assessed.
Earlier, Bahrain’s Ministry of the Interior had reported on the fire without specifying where the blaze had broken out.
The Interior Ministry has said civil defence crews “extinguished a fire in the facility” that broke out “as a result of the Iranian aggression”.
The announcement came an hour after Bahrain activated air raid sirens.
Authorities in neighbouring Abu Dhabi on Sunday also stated they responded to several fires that broke out at the Borouge petrochemical plant, caused by falling debris from an interception.
“Operations at the plant have been immediately suspended pending a damage assessment,” read a statement issued by Abu Dhabi Media Office.
No injuries have been reported so far, it added.
Saudi Arabia, meanwhile, intercepted missiles early on Sunday, the kingdom said.
“Iran has said that it is only really attacking US military bases and US assets in the region, but we know from what’s been happening over the past five weeks and from what Gulf leaders have been saying that they have very much been targeting civilian infrastructure and critical energy infrastructure in this region as well,” said Gatenby.
While Gulf countries have shown “incredible restraint” in the face of attacks over the past five weeks, it is not because they lack the ability to respond and, increasingly, countries are talking about the fact that their patience is not unlimited, said Gatenby.
Saudi Arabia, in particular, has been talking in the past week about its right to self-defence under Article 51 of the UN Charter, she said.
“The GCC countries continue to say their main priority is de-escalation and dialogue, but some others have been saying this defensive posture may have to change if they continue to be attacked,” said Gatenby.
