BEIRUT (AP) ― Syrian dissidents on Sunday formally established a broad-based national council designed to overthrow President Bashar Assad’s regime, which they accused of pushing the country to the brink of civil war. Syrians took to the streets in celebration, singing and dancing.

In a restive northern area, meanwhile, gunmen killed the 21-year-old son of Syria’s top Sunni Muslim cleric in an ambush, the state-run news agency reported. The cleric, Grand Mufti Ahmad Badreddine Hassoun, is considered a close supporter of Assad’s regime and has echoed its claims that the unrest in Syria is the result of a foreign conspiracy.

The announcement of the Syrian National Council at a news conference in Istanbul appeared to be the most serious step yet to unify a deeply fragmented opposition. It follows five days of intense battles between the Syrian military and army defectors in the country’s central region that raised the specter of all-out armed conflict.

Prominent Syrian opposition figure Bourhan Ghalioun, who read out the founding statement of the SNC at the news conference in Istanbul, accused the regime of fomenting sectarian strife in Syria to maintain its grip on power.

“I think that this (Assad) regime has completely lost the world’s trust,” he said. “The world is waiting for a united Syrian (opposition) that can provide the alternative to this regime, so that they can recognize it,” he added.

“The council denounces the (regime’s) policy of sectarian incitement ... which threatens national unity and is pushing the country to the brink of civil war,” he said.

Syria’s volatile sectarian divide means that an armed conflict could rapidly escalate in scale and brutality. The Assad regime is dominated by the Alawite minority, an offshoot of Shiite Islam, but the country is overwhelmingly Sunni Muslim.

The opposition movement has until now focused on peaceful demonstrations, although recently some protesters have been reported to have taken up arms to defend themselves against military attacks. Army defectors have also been fighting government troops.

Sunday’s killing of the mufti’s son took place in the Saraqeb region of the restive northern Idlib province as he left the university where he studied. He was shot in the chest and kidney and died later of his injuries. The news report gave no details on who might have been behind the killing.

In forming a national council, the Syrians are following in the footsteps of Libyan rebels, who formed a National Transitional Council during the uprising that ousted dictator Moammar Gadhafi. The Libyan council won international recognition and has now become the main governing body that runs the country.

Groups of Syrians poured into the streets in southern and central regions of the country to celebrate the announcement.

Although the mass demonstrations in Syria have shaken one of the most authoritarian regimes in the Middle East, the opposition has made no major gains in recent months. It holds no territory and still has no clear leadership.

The Syrian opposition consists of a variety of groups with differing ideologies, including Islamists and secularists, and there have been many meetings of dissidents claiming to represent Syria’s popular uprising since it erupted seven months ago. But the new council is the broadest umbrella movement of revolutionary forces formed so far.

Syria warns U.S. envoy against meddling

BEIRUT (AP) ― U.S. Ambassador Robert Ford should stop meddling in Syrian affairs if he wants to avoid more ‘rotten eggs’ attacks in the future, a state-run Syrian newspaper warned on Sunday.

The Al Baath newspaper, a mouthpiece of the Syrian regime, accused Ford of supporting armed anti-government groups in Syria and said his meddling will not be tolerated.

Supporters of President Bashar Assad on Thursday pelted Ford ― an outspoken critic of the Syrian regime’s brutal crackdown on the country’s six-month-old uprising ― with eggs as he visited a prominent Syrian opposition figure in Damascus. He was trapped in the office for about three hours by the hostile pro-government protesters outside until Syrian security forces arrived to escort him out.

“If you want to avoid rotten eggs, you should advise your country to stop its blatant interference in Syrian affairs and its feverish efforts to seek sanctions against Syria from the U.N. Security Council,” the newspaper said.

U.S. Secretary of State Hillary Rodham Clinton and the White House said the assault was part of a campaign to intimidate diplomats looking into the Assad’s government’s brutal repression of pro-reform demonstrators. The Obama administration summoned Syria’s ambassador in Washington to hear formal U.S. condemnation of the assault.

In comments posted on the embassy’s Facebook page, Ford said Thursday’s attack was not limited to eggs and tomatoes.

“Protesters threw concrete blocks at the windows and hit the cars with iron bars. One person jumped on the hood of the car, tried to kick in the windshield and then jumped on the roof,” Ford wrote