Iran struck Gulf infrastructure Sunday, hitting fuel tanks at Kuwait's airport and a desalination plant in Bahrain, with at least four reported dead in the region as Tehran pressed its campaign there into a second week.

In Saudi Arabia, the civil defence said a "military projectile" killed two people -- an Indian and a Bangladeshi -- and injured 12 others after it fell in a residential area in Al-Kharj governorate south of Riyadh.

The global positioning system (GPS) capabilities of cargo ships, oil tankers and other vessels stuck in the Middle East because of the widening war are likely worse than those in your cell phone.

Experts say this deficiency explains why since the start of US-Israeli strikes, the jamming of satellite navigation signals has left about 1,000 ships in the Gulf and the Gulf of Oman unable to determine their location, either momentarily or continuously.

Israel struck a hotel in central Beirut on Sunday, the first attack on the city centre since the start of the new war with Hezbollah, as Lebanon said nearly 400 people were killed over the past week.

Lebanon was drawn into the Middle East war on Monday, when Iran-backed militant group Hezbollah attacked Israel in response to the killing of Iranian supreme leader Ayatollah Ali Khamenei during US-Israeli strikes.

By Nicole Jao, Ted Hesson and Nandita Bose

NEW YORK, March 7 (Reuters) - The White House has halted, at least for now, a federal security bulletin warning of a heightened threat to the U.S. in light of the conflict in Iran, a Trump administration official told Reuters.

By Costas Pitas and Andrew MacAskill

March 7 (Reuters) - President Donald Trump said on Saturday that Britain is giving "serious thought" to sending two aircraft carriers to the Middle East, but added that the U.S. does not need them to win the war with Iran, in the latest clash between the military allies.

Trump has repeatedly criticised British Prime Minister Keir Starmer suggesting this week that he helped "ruin" the countries' historically close relationship after London blocked the U.S.'s initial use ‌of British bases to attack Iran.

President Donald Trump on Saturday blamed Iran for what the country's authorities said was a deadly strike on a school in the southern county of Minab.

"We think it was done by Iran. Because they are very inaccurate, as you know, with their munitions. They have no accuracy whatsoever," Trump told reporters aboard Air Force One.

According to Iranian authorities, a strike hit a girls' elementary school last Saturday, killing more than 150 people, mostly students.

March 7 (Reuters) - Ukrainian President Volodymyr Zelenskiy said on Saturday he had spoken to Saudi Crown Prince Mohammed bin Salman about the situation in Iran and the Middle East and restated Kyiv's offer to help deal with Iranian drones.

"Ukraine has been fighting against (Iranian-designed) 'Shaheds' for years, and everyone acknowledges that no other country in the world has such experience," Zelenskiy said on Telegram of his conversation.

"We are ready to help and expect that our people will also receive the necessary support."

On a deserted road not too far from the border between Iran and Iraqi Kurdistan, Satar Barsirini looked up at the sky, now streaked with jets and drones.

Iraq's Kurdish region has found itself caught in the crossfire of a regional war triggered by US and Israeli attacks on the Islamic republic.

Dressed like the Kurdish fighters he once served alongside, Barsirini still wears the khaki shalwar, fitted jacket and scarf wrapped around his waist.

Though recently retired, he refuses to give up his peshmerga uniform as he tills his small plot of land.

US President Donald Trump attended the return Saturday of the bodies of the first six US soldiers killed during the escalating war with Iran.

Trump, wearing a white "USA" baseball cap, saluted as troops carried each flag-draped case from a military transport plane at Dover Air Force Base in Delaware, where the remains of US troops killed overseas are returned to American soil.

By Samia Nakhoul and Parisa Hafezi

March 7 (Reuters) - Saudi Arabia has told Tehran that while it favours a diplomatic settlement to Iran's conflict with the United States, continued attacks on the kingdom and its energy sector could push Riyadh to respond in kind, four sources familiar with the matter told Reuters.

The message was conveyed before a speech on Saturday in which Iranian President Masoud Pezeshkian apologised to neighbouring Gulf states for Tehran’s actions -- an apparent attempt to defuse regional anger over Iranian strikes that hit civilian targets.