NATO chief Anders Fogh Rasmussen urged Syria Thursday to find a political solution to the country's crisis and warned against any new incidents with Turkey after a plane was shot down.

"I would expect that the Syrian authorities will do all they can to avoid any escalation and any such unacceptable incident as we saw when they shot down a Turkish aircraft," Rasmussen told a joint news conference with Slovenian Prime Minister Janez Jansa in Ljubljana.

Under cover of darkness, five Syrian rebels make their way by motorbike to the Crac des Chevaliers crusader fortress, where fighters are holding out against President Bashar Assad's forces.

The road to the nearly 1,000-year-old castle is pockmarked with craters, and frequent blasts rip through the air as regime forces pound the area with tank and artillery fire.

Up to 5,000 Syrians have sought refuge in Jordan over the past week from the bloodshed in their country, in a possible prelude to a large-scale influx, the U.N. refugee agency said on Thursday.

"Around 4,000 to 5,000 have crossed the borders this week, which is a large number," the UNHCR representative in Jordan, Andrew Harper, told Agence France Presse. "More and more people are likely to be coming to the kingdom."

Fifteen people were detained on Thursday after attacking Jordanian Prime Minister Fayez Tarawneh's motorcade with tomatoes during a visit to the northern city of Irbid, police said.

"The fifteen people were detained after they tried to prevent the prime minister's motorcade from passing through a main road in Irbid, and hurled tomatoes on his cars," police spokesman Mohammed Khatib told Agence France Presse.

A Bahraini court has ordered an 11-year-old Shiite boy charged with disturbing security to be monitored by a social worker for one year, a government statement said.

Ali Hassan, released from a juvenile care center on June 11, will remain free but a social worker who will visit him twice during a year, at six-month intervals.

Iraqi Foreign Minister Hoshyar Zebari said on Thursday that a Yemen-style power transfer was unlikely in Syria because its President Bashar Assad would refuse to step down.

"Personally I think the Yemeni model would not succeed in Syria. In Yemen, there were supporters of that model, but it is not the case in Syria," Zebari told reporters.

Syrian President Bashar Assad insisted he enjoyed popular support in his own country and said foreign intervention was mainly to blame for the conflict, in an interview published Thursday.

"At the end of the day, we are human too," he told the Turkish daily Cumhuriyet.

WikiLeaks said Thursday it was publishing over two million emails from Syrian political figures dating back to 2006 but also covering the period of the crackdown on dissent by Syria's regime.

"Just now... WikiLeaks began publishing the Syria files, more than two million emails from Syrian political figures, ministries and associated companies dating from August 2006 to March 2012," said Sarah Harrison, spokeswoman for the anti-secrecy website.

Tunisia on Thursday called for an urgent meeting of the Arab League and an international probe into the 2004 death of Palestinian leader Yasser Arafat over suggestions that he might have been poisoned.

"We call for an urgent meeting of Arab League foreign ministers and the creation of an international committee to investigate the circumstances surrounding the death" of Arafat, Foreign Minister Rafik Abdessalem told private radio station Mosaique FM.

The chief U.N. military observer in Syria, Major General Robert Mood, said on Thursday that he is opposed to his 300-strong team being armed.

"I've made it quite clear, from my point of view, that to give a small observer force weapons is not a good option," Mood told a press conference in the Syrian capital.