U.S. President Barack Obama Tuesday described the violence in Syria as "heartbreaking," but cautioned there was no simple solution, warning unilateral military action would be a mistake.

"What's happening in Syria is heartbreaking, and outrageous, and what you've seen is the international community mobilize against the Assad regime," Obama told a White House press conference.

The opposition Syrian National Council on Saturday urged Syria's diaspora to protest outside Russian embassies against Moscow's opposition to a draft resolution on Syria at the U.N. Security Council.

"We call upon all Syrians abroad to show solidarity with our people inside the country and protest against the Russian position by holding sit-ins in front of the embassies of the (Syrian) regime, Russian embassies, and at U.N. centers tomorrow Sunday at 2:00 pm their local time," Samir Neshar, a member of the SNC's executive committee, said at a news conference in Istanbul.

U.N. leader Ban Ki-moon on Thursday condemned the killing of a Syrian Red Crescent chief and demanded the Damascus government investigate the crime.

Ban is "deeply concerned" at the killing of Abdelrazak Jbeiro, the Syrian Red Crescent secretary general, who was ambushed Wednesday while driving in the restive northwest province of Idlib, said U.N. spokesman Martin Nesirky.

Alawite intellectuals denounced on Thursday what they said are efforts by the Syrian government and parts of the opposition to link their sect to the regime, warning against the consequences of casting a popular uprising for civil rights in a sectarian light.

The group, which includes writers and journalists, denounced the "government's efforts to link the Alawite community and religious minorities to the regime by manipulating the security situation and the media."

Progressive Socialist Party leader MP Walid Jumblat stressed that Lebanon can “overcome instability,” voicing his support to the cabinet that was able to prevent civil “strife and vacuum.”

“Maybe the developments need some time” to be resolved, Jumblat told al-Akhbar newspaper on Wednesday.

The UAE's foreign minister accused the Syrian regime on Tuesday of not facilitating the job of Arab League observers, lamenting the latest reported attacks on the envoys.

"The job of the observers is getting more difficult day after day ... We do not see a commitment from the Syrian side that would allow them" do their job, Sheikh Abdullah bin Zayed al-Nahyan told reporters in Abu Dhabi.

Former Prime Minister Saad Hariri deemed as “ridiculous” Syrian President Bashar Assad’s speech on Tuesday.

He said via Twitter on Tuesday: “Assad is in denial as he has deemed all the developments in his country as a conspiracy.”

Syrian forces were accused of firing nail bombs Friday to disperse protesters as hundreds of thousands of people flooded streets across the country to make their voices heard to Arab monitors.

Protesters called for the ouster and prosecution of President Bashar al-Assad, whose autocratic regime has been blamed for the deaths of more than 5,000 people since pro-reform protests erupted in March.

Maronite Patriarch Beshara al-Rahi on Tuesday noted that embattled Syrian President Bashar al-Assad had “launched reforms in March” in his revolt-hit country, calling for “closing all doors and windows in the face of the foreign plots against the Levant.”

Addressing a Syrian delegation from the coastal city of Tartous that visited him in Bkirki, al-Rahi said: “Together with you, we are looking forward to the implementation of the vital constitutional reforms Syria is in need of, and I know that the president launched those reforms in March.”

The Mustaqbal bloc condemned on Tuesday Defense Minister Fayez Ghosn’s statements last week that al-Qaida members had infiltrated the Bekaa town of Arsal and then headed to Syria, saying that he should not issue such claims without basing them on facts.

The bloc said in a statement after its weekly meeting: “We will resort to all possible democratic and parliamentary measures to hold the minister accountable for his accusations.”