Tens of thousands marched in Tehran and Baghdad Friday in annual Quds (Jerusalem) Day demonstrations in support of Palestinians, but Saudi Arabia this year joined arch-foe Israel as the target for protesters.

President Hassan Rouhani attended but did not speak at the main rally in Tehran, which coincided with seemingly deadlocked nuclear talks between Iran and world powers led by the United States.

Tributes flowed Friday following the death of Saudi Arabia's Prince Saud al-Faisal, the world's longest-serving foreign minister, credited with facing down successive regional crises and forging strong ties with the West.

Prince Saud oversaw four decades of diplomacy for the world's biggest oil exporter before he retired in April for health reasons.

Saudi Arabia's Prince Saud al-Faisal, who was the world's longest-serving foreign minister, has died, family members and a foreign ministry spokesman said late Thursday.

Prince Saud, who was born in 1940, was one of the highest profile members of Saudi's ruling elite and steered the diplomacy of the world's leading oil exporter for four decades before stepping down in April for health reasons.

A U.S. aircraft carrier in the Gulf hosted one of Saudi Arabia's most powerful figures, official media said on Wednesday, as regional concerns mount over alleged interference by Iran.

Deputy Crown Prince Mohammed bin Salman, who is also defense minister, boarded the USS Theodore Roosevelt which is operating in Gulf waters, the Saudi Press Agency said.

A Saudi-led coalition bombarded cities and towns in southern Yemen on Tuesday, as the targeted Shiite rebels accused it of killing 124 people in one of the deadliest days of its air war.

The bloodshed came two days after U.N. envoy Ismail Ould Cheikh Ahmed arrived in Sanaa bidding to secure a humanitarian ceasefire in a conflict estimated to have killed 3,000 people, mostly civilians.

The U.N. said Tuesday it had received just 13 percent of the $1.6 billion needed for aid to Yemen, where three months of fighting has forced more than one million people to flee their homes.

"The operations are critically underfunded," Jens Laerke, spokesman for the U.N. humanitarian agency told reporters in Geneva.

Two brothers arrested in Saudi Arabia had transported the explosives used in the suicide bombing of a Shiite mosque in Kuwait, the interior ministry said Tuesday.

It said Majed al-Zahrani and Mohammad al-Zahrani smuggled in the explosives in an icebox by car through Nuwaiseeb border post from Saudi Arabia, a day before the June 26 bombing that killed 26 people.

Fighting gripped Yemen's second city Aden on Sunday as the U.N. envoy arrived in the rebel-held capital Sanaa to press efforts to broker a ceasefire.

Saudi-led warplanes bombed rebel positions, killing eight people, while rebel rocket fire killed six, including a child, officials said.

A Saudi fugitive was killed in a shootout with police after having escaped a raid on suspected jihadists, the interior ministry said Saturday.

A policeman was shot dead during Friday's raid in the eastern city of Taif in which three suspects were arrested and flags of the Islamic State jihadist group seized.

A Saudi-led air strike on a Huthi Shiite rebel stronghold in Yemen's northern mountains killed 23 people early on Saturday, tribal sources said.

The strike targeted a munitions factory in Saqayn, near Saada, the sources said.