Syria's rebels conceded on Tuesday they had lost the battle for the strategic town of Qusayr but vowed to fight “thousands of Lebanese mercenaries” after the army seized total control of it and the surrounding region.

The main opposition National Coalition shrugged off the defeat, declaring the "revolution will continue".

European Union countries mulled on Tuesday placing Hizbullah's military wing on its list of terrorist organizations ahead of a wide meeting for EU foreign ministers in Luxembourg on June 24.

According to As Safir newspaper, several EU countries, including Austria are questioning the “motives behind blacklisting Hizbullah.”

The head of the Arab Democratic Party, Rifaat Eid, has expressed reservations over raids carried out by the Lebanese army in his stronghold in the northern city of Tripoli as Speaker Nabih Berri hinted that a fifth column was seeking to create tension in the area.

In remarks to An Nahar daily, Eid said the army made unusual steps in the neighborhood of Jabal Mohsen on Tuesday by “raiding our homes and ransacking them and we haven't made a move against it.”

The White House on Tuesday condemned Hizbullah's involvement in Syria's war, expressing that the party's leader Sayyed Hasan Nasrallah is “playing a dangerous game,” as the Free Syrian Army threatened to move the battle to Lebanon.

"We are deeply concerned by the continued fighting in (the Syrian border town of) al-Qusayr and condemn the indiscriminate killing of civilians by Assad's forces and his proxies, including Hizbullah fighters," White House spokesman Jay Carney said.

Al-Mustaqbal parliamentary bloc Tuesday urged political and security officials to adopt an “effective plan” that draws an end to the ongoing violence in the northern city of Tripoli, demanding the penalization of “those who failed in controlling the situation.”

“We call on political and security authorities to quickly act to end the crime taking place in Tripoli and to implement an effective security plan,” the bloc stated after the MPs' weekly meeting at the Center House.

Progressive Socialist Party leader MP Walid Jumblat on Tuesday urged an end to the fighting in Tripoli, noting that any attempt to affect the course of battles in Syria through igniting the situation in the northern city is futile.

“As major world powers stand idly by regarding the martyrs that are falling everyday across Syria, and given their inability to reach a common vision on the implementation of the desired political solution that aims to rescue the Syrian people, igniting the fire in the city of Tripoli will not change the equations of the complicated and worsening Syrian situations,” Jumblat said in a press release.

Lebanese Forces leader Samir Geagea stated on Tuesday that Hizbullah is “getting out of control,” urging the president of the republic and the premier-designate to “announce that they are in charge of things.”

"We are in front of two options which are either to go along with Hizbullah or to act taking into consideration the Lebanese people's higher interests through the formation of a salvation cabinet,” Geagea said in an interview with the Central News Agency.

Free Patriotic Movement leader MP Michel Aoun on Tuesday said the Constitutional Council “cannot but accept” the challenges filed against the extension of parliament's term, calling for the replacement of security officials over the dire security situation in Tripoli.

“We extensively discussed the challenge we have filed and the possible effects should it be accepted. We agreed that as is the case with any vacant seat, elections would have to take place within 60 days and the parliament would be dissolved,” Aoun said after the weekly meeting of the Change and Reform parliamentary bloc in Rabiyeh.

Caretaker Foreign Minister Adnan Mansour on Tuesday stressed that Lebanon cannot accept that Hizbullah be labeled as a “terrorist organization,” noting that Lebanon is still committed to the so-called self-dissociation policy.

Ahead of leaving Beirut for Cairo, where he will take part in an extraordinary meeting for Arab foreign ministers on Wednesday, Mansour said: “The meeting will be focused on the Syrian issue and the latest developments in this regard.”

Caretaker leader of the Syrian National Coalition George Sabra on Tuesday urged Speaker Nabih Berri to open “humanitarian corridors” to evacuate the wounded in the neighboring country's border town of a-Qusayr.

"There are more than 1000 wounded persons in al-Qusayr, 400 of them are in critical conditions, and we do not have enough support in the town to heal these people,” Sabra explained in a videotaped speech posted online.