Saudi King Salman hosted Pakistani Prime Minister Imran Khan Wednesday on his maiden foreign visit since coming to power, state media said, as Islamabad seeks to stave off a financial crisis.

Taxi driver Fahed Othman has been waiting to fill up at a petrol station in the Yemeni capital for two days, but when his turn finally comes the fuel has run out.

An Iraqi court on Wednesday sentenced a prominent jihadist described as a deputy of Islamic State group leader Abu Bakr al-Baghdadi to death on terrorism charges.

"The Karkh criminal court in Baghdad sentenced to death by hanging one of the most prominent leaders of IS, who served as a deputy of Baghdadi," judicial spokesman Abdel Sattar Bayraqdar said.

Thousands of residents of Syria's last major rebel bastion Idlib headed home within 48 hours of a deal being announced to avoid a government offensive to retake the province, a war monitor said on Wednesday.

Fears were growing of a humanitarian crisis in Yemen after Saudi-backed government forces launched a series of attacks on rebel-held Hodeida, as a charity warned Wednesday that more than five million children were at risk of famine in the war-torn state.

Israeli Prime Minister Benjamin Netanyahu vowed Tuesday that Israel would keep acting against its arch foe Iran in Syria, after a Russian aircraft was accidentally downed there by Syria during an Israeli missile strike.

The United Nations on Tuesday cautiously backed a Turkish-Russian deal to create a buffer zone in Syria's rebel-held Idlib province that put off the threat of an imminent onslaught.

A Palestinian died after being arrested during a raid in the occupied West Bank overnight, the Israeli army said Tuesday, with his family accusing soldiers of beating him.

Twenty-four Yemenis, including a teenage girl, could face the death penalty in the rebel-held capital Sanaa on charges linked to their minority Bahai faith, Amnesty International said Tuesday.

New clashes flared between rival militias south of Libya's capital Tripoli on Tuesday, causing widespread power outages, the national electricity firm said.