U.S. Secretary of State John Kerry has vowed new support for Syria's rebels but beyond tougher talk, it remains unclear how much has changed.

Kerry met with fellow opponents of Syrian President Bashar Assad's regime during talks Saturday in the Gulf Arab monarchy of Qatar, a stalwart supporter of the Sunni Muslim rebels.

A young man died on Saturday in Saudi Arabia's restive Shiite-populated region of Qatif, police said, saying he had been found in his car after unknown gunmen opened fire at patrolmen in the area.

The man, who was not immediately identified, died on his way to hospital, the official SPA news agency reported a police official as saying.

Palestinian president Mahmoud Abbas will meet on Sunday with prime minister Rami Hamdallah in a new bid to defuse a political crisis that prompted the premier to submit his resignation, a senior Palestinian official said.

The 11:00 am (0800 GMT) meeting at Abbas's offices in the West Bank city of Ramallah will be their third in 48 hours.

French President Francois Hollande arrived in Qatar on Saturday for talks on the Syrian civil war and on economic ties with the gas-rich Gulf state.

He landed in Qatar as a "Friends of Syria" meeting there earlier in the day decided to provide urgent military aid to Syria's rebels.

Jordan on Saturday denied an American newspaper report saying that the CIA and U.S. special operations forces were training rebels from neighboring Syria on its territory.

"There is no training in our country whatsoever of Syrian opposition forces," Prime Minister Abdullah Nsur told a group of journalists including one from Agence France Presse.

Leading Egyptian dissident Mohammed ElBaradei urged President Mohammed Morsi on Saturday to resign for the sake of national unity, ahead of planned opposition-backed rallies calling on the Islamist leader to step down.

"For Egypt's sake, I call on President Mohammed Morsi to resign and give us the opportunity to begin a new phase based on the principles of the revolution, which are freedom and social justice," ElBaradei said.

Egypt's airports will raise their alert level to "high" ahead of June 30 when opposition-backed protesters plan to demonstrate against President Mohammed Morsi, security officials said on Saturday.

"An emergency plan will be put in place from June 28 until July 1," the head of Cairo airport security, General Magdy al-Yussri, told reporters.

Syrian President Bashar Assad ordered a pay rise on Saturday for all military and civil service personnel, as his regime sought to give its loyalists some protection against soaring inflation.

Soldiers and civil servants will get a 40 percent pay rise on the first 10,000 pounds (50 dollars) a month of their salaries, and a further 20 percent rise on the next 10,000, the decree carried by the official SANA news agency said.

Egyptian President Mohammed Morsi has repeated a call for dialogue with the opposition in an attempt to mitigate deep political divisions ahead of planned rallies later this month calling for his resignation.

"I have said it before. I urge everyone to sit together to discuss what would achieve the interests of our nation," Morsi said in an interview published in the state-owned Akhbar al-Youm newspaper.

Syria's army on Saturday pressed a fierce assault launched four days ago against rebel areas in northern and eastern Damascus, killing three children with mortar fire, a monitoring group said.

In northern Syria, rebels said they had begun a new assault on regime-held neighborhoods of the country's second city, Aleppo.