Iranian Foreign Minister Abbas Araghchi listens to his Iraqi counterpart Fouad Hussein during a news conference after a meeting at the foreign ministry in Baghdad, Iraq, Sunday. (AP Photo/Hadi Mizban)

DUBAI, United Arab Emirates (AP) — Iran again launched drone and missile attacks targeting Bahrain and Kuwait on Sunday following new U.S. airstrikes against the Islamic Republic, and threatened a “complete halt” in negotiations to end the war if Washington continues its attacks.

Efforts to reopen the Strait of Hormuz without Iran’s oversight has sparked days of crossfire. A multinational maritime body overseen by the U.S. Navy said Saturday it would expand a route near Oman for inbound and outbound traffic.

Iranian Foreign Minister Abbas Araghchi on Sunday reiterated the claim that Tehran must govern the strait to the Persian Gulf that once carried a fifth of the world’s oil and natural gas.

“Any attempt to establish new or separate arrangements from those currently being carried out by the Islamic Republic of Iran will only lead to further complications, delay the reopening of the Strait of Hormuz and increase the level of tension,” Araghchi said.

The strait has long been considered an international waterway despite its location in Iran and Oman’s territorial waters. In recent days, Iran has twice attacked vessels going through a route near the Omani side.

Pakistan, a key mediator, has said talks would resume Tuesday between the U.S. and Iran on the terms of their interim deal. The Trump administration on Sunday said nothing has been canceled and technical talks are on track for the coming days.

Talks include arrangements around the strait, the removal of a U.S. blockade on Iranian ports and sanctions on Iran, and the future of Iran’s stockpile of highly enriched uranium. The two sides have 60 days from their signing of the memorandum of understanding earlier this month to work out details.

Continued conflict in Lebanon threatens the agreement, which says fighting must end on all fronts before certain issues can be discussed.

Iran’s paramilitary Revolutionary Guard claimed responsibility for the attacks in Bahrain and Kuwait.

Kuwait, which hosts a major U.S. military base, said air defenses intercepted Iranian drones and two missiles just after the U.S. strikes in Iran. There were no reports of injuries or damage.

Bahrain said the Iranian strikes damaged a residential building near the international airport and no one was killed. Bahrain is home to the U.S. Navy’s 5th Fleet. The damaged building was not near its headquarters.

Bahrain’s Foreign Ministry denounced what it called “a dangerous escalation that reveals that what Tehran is doing is not a passing act, nor an isolated incident, but rather a deliberate approach and a systematic pattern of repeated aggression.”

Later on Sunday, Qatar said a civilian had been killed, and another person was hurt, by shrapnel related to “military operations in the area” after a vessel didn’t return at its scheduled time on Saturday. It did not give details.

The U.S. military said it struck Iranian military “surveillance infrastructure, communication systems, air defense sites, drone storage facilities and minelayer capabilities” following an attack on a ship on Saturday. The Panamanian-flagged tanker Kiku carried crude oil for the state-run energy company of Qatar, another key mediator.

U.S. President Donald Trump on social media accused Iran of violating the deal and warned of a point where the U.S. may “be forced to militarily complete the job.”

“If that happens, the Islamic Republic of Iran will no longer exist!” Trump wrote.

The exchanges of fire began when an Iranian drone struck a merchant vessel off Oman on Thursday and the U.S. military retaliated.

Ship traffic on the strait had increased over the past 72 hours, “despite the elevated threat environment,” the multinational maritime body overseen by the U.S. Navy said Sunday, adding that “U.S.-assisted commercial transits continued uninterrupted.”

It said 89 such transits had been made, below the historical average of 138 vessels a day.

Last week, Israel and Lebanon signed a framework agreement to end the latest fighting between Israel and the Iranian-backed Hezbollah militant group, which began two days after the Iran war started when Hezbollah fired at Israel. Israel has responded with an invasion of southern Lebanon and it has said it will not withdraw until Hezbollah is disarmed.

The agreement did not include Iran or Hezbollah, which has criticized it and rejected calls to disarm.