The United States warned Saturday that hostilities between Saudi Arabia and Iran-backed Houthis could "escalate rapidly" after a missile attack targeted Riyadh for the first time since the Yemen conflict resumed.

U.S. President Donald Trump cut short a weekend at Camp David, a secluded presidential complex in rural Maryland, to return unexpectedly to the White House on Saturday.

U.S. President Donald Trump cut short a weekend at Camp David to return unexpectedly to the White House, as tensions rose in the Middle East.

There was no explanation from the administration why Trump was no longer returning on Sunday from Camp David, a secluded presidential complex in rural Maryland, as had been previously announced.

Israeli forces has set fire to a government hospital in the southern border town of Mays al-Jabal, inside Israel's self-declared security zone, Lebanon's National News Agency said.

Lebanon's health ministry meanwhile condemned the act as a "barbaric crime."

Turkey has revoked the license of Iran's Bank Mellat, a semi-private financial entity that has been subject to Western sanctions for years, the official gazette said early Saturday.

Explosions were heard in Riyadh early Saturday, AFP journalists reported, after Saudi authorities issued their first air raid alert in the capital since fighting returned to neighboring Yemen.

Denmark's foreign minister said Saturday that a "binding" agreement on Greenland's security with the U.S. "strengthens security" in the Arctic, ahead of its expected signing in the coming days.

Syrian singer Assala Nasri has made a triumphant return to Damascus with a sold-out concert following 15 years of exile due to her opposition to ousted ruler Bashar al-Assad.

Thousands of fans welcomed the 57-year-old, known mononymously as Assala, at a venue in the Syrian capital where she bowed and opened the show with songs hailing the Syrian people.

French President Emmanuel Macron said Thursday, as Paris hosted security talks to drum up international support for the cash-strapped Lebanese army that Lebanon's army is "indispensable" for bringing stability to the country.

Macron said that the talks aimed to "strengthen Lebanon's sovereignty and enable it to fully ensure its security", after years during which political factions, such as Hezbollah, wielded greater authority than the Lebanese state.

Israeli forces on Friday seized control of a position established by the Lebanese Army on the outskirts of the southern town of Deir Mimas following the withdrawal of the Lebanese troops, Al-Jadeed TV said.

The Israeli army had earlier hurled six stun grenades at the entrance of Deir Mimas, demanding that the Lebanese Army remove the checkpoint from the area and arguing that it lies within the Israeli-designated Yellow Zone.

A tanker was struck in the Strait of Hormuz on Friday, causing a fire that was extinguished, according to the United Kingdom Maritime Trade Operations (UKMTO).

"The CSO of a vessel has reported a tanker being hit by an unknown projectile, causing a fire onboard which has since been extinguished," the maritime monitor said, adding that the crew were safe, although the environmental impact of the attack was "unconfirmed".