The Iran-backed Houthi rebels in Yemen are continuing cross-border strikes.
Talks between the U.S. and Iran have stalled despite the two countries signing a memorandum of understanding in June, aimed at ending the war that began with joint American-Israeli strikes on the country in February.
The two sides have continued to exchange strikes, though have not returned to the intense fighting seen in the early stages of the conflict. The U.S. says it is enforcing a naval blockade of the country's Persian Gulf and Gulf of Oman ports, while Iran claims control over the strategic Strait of Hormuz and continues to claim attacks on shipping transiting the waterway.
Meanwhile, intensified fighting between Saudi-backed Yemeni forces and Iran-backed Houthi rebels in Yemen has seen the latter repeatedly attack Saudi military and oil infrastructure facilities.
See the most recent developments below.
At least one person was killed and eight others injured in an attack on the King Fahd International Airport in Dammam, Saudi Arabia, on Wednesday, according to the Saudi civil aviation authority.
The injuries ranged from minor to severe, the authority said.
"The attack also resulted in material damage, which is currently being assessed," the authority said in a statement.
Islamic Revolutionary Guard Corps commander Brig. Gen. Yadollah Javani warned that Iran could target seven critical undersea internet cables passing through the Strait of Hormuz if the U.S. resumes attacks on Iran.
"The Americans and their allies possess significant assets; should they seek to damage our infrastructure, it is only natural that the Islamic Republic would leverage its full capabilities to readily destroy their assets and holdings, including the seven critical internet cables that run underwater through the Strait of Hormuz," Javani said in an interview with the state-run Al-Alam News Agency.
-ABC News' Charlotte Gardiner and Somayeh Malekian
The United Kingdom Maritime Trade Operations (UKMTO) Centre on Wednesday reported an attack on a tanker in the northern Persian Gulf off the coast of Iraq that took place on Tuesday.
"The master of a tanker reports being struck by an unknown projectile, the crew are reported as safe and there is no reported damage or environmental impact," the UKMTO's advisory said. The incident took place 30 nautical miles southeast of Al Faw, Iraq, it added.
In a separate report, the UKMTO said that another tanker was hit by an unknown projectile off the coast of Oman in the early hours of Wednesday. The attack caused a fire which has since been extinguished, it said.
Secretary of State Marco Rubio told reporters on Wednesday during his trip to India that President Donald Trump's administration will not allow Iran to acquire a nuclear weapon.
Rubio confirmed that third-party countries such as Qatar are still working as intermediaries to bring Iran back to the negotiating table amid stalled peace talks.
Rubio added that the U.S. commitment to preventing Iran from acquiring nuclear weapons -- an alleged ambition that Tehran has repeatedly denied -- will continue for as long as Trump is in office.
"At the core of all of this is something very simple to understand: the United States will not support any deal that creates a pathway for Iran to ever have a nuclear weapon. As long as President Trump is in office," Rubio said.
-ABC News' Alex Ederson
