A senior Iranian security official visiting Damascus on Saturday pledged Tehran's full support for the Syrian regime, its close ally, Syrian state television said.

"We will give all our support so that Syria remains firm and able to face all the arrogant (Western) conspiracies," said Saeed Jalili, who heads the Supreme National Security Council.

Palestinians and activists were on Saturday forcefully removed from a new camp near a West Bank village, after a third attempt at the novel form of protest against Jewish settlement.

An Agence France Presse correspondent said the army used tear gas and violence to remove hundreds of people who had set up four temporary huts and three tents near Burin, south of Nablus in the northern West Bank.

Iran on Saturday unveiled a fighter jet it said was designed and built domestically, with President Mahmoud Ahmadinejad touting it as "one of the most advanced" aircraft in the world.

State television footage showed the grey, futuristic-looking aircraft, code-named Qaher (Conqueror) F-313, displayed in a hangar.

Yemen's armed forces killed 12 suspected al-Qaida militants in an assault on their mountain hideout in the country's restive south, an official in the region said on Saturday.

The military used artillery and aircraft to target the hideout near Shaqra, 35 kilometers (22 miles) from the Abyan capital of Zinjibar, in the operation late on Friday, the official said.

The U.S. and Russia meet in Germany Saturday in a new bid to iron out differences over Syria's war, with the leader of the opposition saying the world must not be a bystander to the tragedy.

On the sidelines of the Munich Security Conference, U.S. Vice President Joe Biden is to meet Russian Foreign Minister Sergei Lavrov, Syrian opposition chief Moaz al-Khatib and U.N.-Arab League peace envoy Lakhdar Brahimi.

Syria's rebels have seized a key district in the embattled northern city of Aleppo, a resident and activists told Agence France Presse on Saturday, as troops again bombarded areas south of Damascus.

"Rebel fighters seized total control of Sheikh Said in southern Aleppo, after troops exhausted by 48 hours of fighting withdrew from the district," one resident of the area said.

Egypt's President Mohamed Morsi vowed security forces will "act with utmost decisiveness" to protect state buildings, as protesters clashed with police outside the presidential palace on Friday.

The presidency, in a statement posted on his Facebook page, also said it would hold "politically accountable" opposition groups behind the violence.

The 22-month conflict in Syria has displaced half of the country's 500,000 Palestinian refugees, the U.N. agency for Palestinian refugees said on Friday.

The U.N. Relief and Works Agency (UNRWA) said 20,000 of the estimated 250,000 Palestinians displaced by the conflict had fled to Lebanon and almost 3,500 to Jordan.

A suicide car bombing at a Syrian military intelligence headquarters in Damascus province killed 53 people, a watchdog said on Friday.

The January 24 attack, reported for the first time by the Britain-based Syrian Observatory for Human Rights, was carried out by the jihadist rebel group the al-Nusra Front, the watchdog said.

Israeli army gunfire wounded two Palestinian teenagers near northern Gaza's border with the Jewish state on Friday, a medical official said.

"Two Palestinians, aged 16 and 17, were hit in the legs by Israeli army gunfire east of Jabaliya as they approached a security barrier" between Israel and the Gaza Strip, health ministry spokesman Ashraf al-Qudra told Agence France Presse.