Fourteen Palestinians were killed on Saturday and 32 injured, some seriously, when their bus collided head-on with a truck in Jordan, the emergency services in the kingdom said.

The passengers had been on the way home to the West Bank from Saudi Arabia where they had performed the Muslim minor pilgrimage or omra when the accident happened.

A Syrian security official on Friday accused Jordan of opening its borders to jihadist fighters and allowing weapons bought by Saudi Arabia in Croatia to be smuggled into the country.

"We deplore the change of attitude of Jordan, which in the past 10 days has opened its borders and is allowing to cross over (into Syria) jihadists and Croatian weapons bought by Saudi Arabia," said the source.

Syria's two-year conflict and the refugee crisis that it has triggered are at real risk of exploding across the Middle East, the U.N. refugee agency warned on Friday.

"I believe that if the Syrian conflict goes on and on and on, there is a real risk of an explosion in the Middle East, and then there will be no way to cope with the challenge from the humanitarian, political and security perspective," said U.N. High Commissioner for Refugees Antonio Guterres.

Britain's Prince Charles and his wife Camilla on Wednesday visited a camp for Syrian refugees in northern Jordan as part of a trip to the Middle East, an official said.

The royal couple toured the United Nations-run King Abdullah Park refugee camp near the border with Syria that hosts about 1,000 Syrians who have fled the war in their country, said the Jordanian government official.

Syria's army could go on fighting "for years" rebels trying to overthrown President Bashar Assad, a pro-regime newspaper said on Tuesday, adding however that citizens could join according to their capacities.

"The army is in perfect condition, its soldiers and officers have been fighting for two years with a courage and bravery unparalleled in world history, in the fiercest of battles," said Al-Watan newspaper, as the conflict prepared to enter its third year.

President Barack Obama on Monday, just days ahead of his Mideast trip, met with about 10 leaders of Arab-American groups who encouraged him to deliver a message of hope to the Palestinian people even if he is unable to immediately deliver a peace plan with Israel.

Obama met with the officials Monday, four days after meeting with Jewish leaders as part of his preparation for the visit.

Britain's government on Monday challenged a ruling blocking the extradition of Jordanian terror suspect Abu Qatada, saying that the justice system in the Arab nation could be trusted.

The Court of Appeal in London reserved judgment until a later date after hearing arguments from the interior ministry and from Abu Qatada's lawyers.

The Philippine government on Sunday welcomed the release of its 21 U.N. peacekeepers after they were freed by Syrian rebels and crossed into Jordan, where officials waited to receive them.

The troops, members of a U.N. force monitoring a 1974 ceasefire between Syria and Israel, were abducted on Wednesday.

King Abdullah II of Jordan reappointed Abdullah Nsur as premier and tasked him with forming the new government after talks between his chief of staff and parliamentarians, the royal palace said.

"The king has accepted the resignation of the (previous) government and charged Abdullah Nsur to form a new government," the palace said.

King Abdullah II of Jordan said on Saturday that he hoped the visit of U.S. President Barack Obama to Israel and the West Bank later this month will offer a momentum to the Mideast peace process.

"We are looking forward to welcoming President Obama in Jordan soon. And I hope to see real momentum in the peace process after his visit, a strategic national interest for both our countries," the king said in an address to Jordanian and American businessmen at a meeting in Amman.