Caretaker Prime Minister Najib Miqati promised on Thursday that the Lebanese army will not hesitate to open fire on gunmen involved in the fighting in the northern city of Tripoli.

In remarks to pan-Arab daily al-Hayat, Miqati said: “The military will respond without hesitation to the sources of fire from any side they came because the city's residents have the right to live in peace.”

President Michel Suleiman called on Prime Minister-designate Tammam Salam to swiftly form his cabinet as the ongoing vacuum has a negative impact on the situation in the country.

“The situation requires all the political powers to take decisive stances,” Suleiman said according to al-Joumhouria newspaper published on Thursday.

Around 10 rockets and mortar rounds from Syria slammed into the northeastern city of Baalbek on Wednesday night, injuring a Lebanese man and causing material damage, the army command said.

A military communique said Thursday that soldiers inspected the areas where the rockets had fallen and carried out patrols.

The United States on Wednesday condemned a Hizbullah-backed assault on the Syrian town of Qusayr, saying the party's involvement threatens Lebanon's stability.

A White House statement condemned the Syrian regime's attack on the town, "which has killed untold numbers of civilians and is causing tremendous humanitarian suffering.”

The countries of the Gulf Cooperation Council urged their citizens on Wednesday to avoid traveling to Lebanon or staying in the country as “a safety precaution.”

“All six member states of the GCC call on their citizens not to travel to Lebanon and urge their nationals who are already in the country to leave it,” Council chief Abdullatif al-Zayani stressed during a press conference.

Caretaker Foreign Minister Adnan Mansour on Wednesday announced from Cairo that pulling Syrian out of its crisis can only be done through political dialogue, describing Hizbullah's military intervention in Syria's Qusayr as a “preemptive act.”

“Only weeks after the eruption of the clashes (in Syria), groups that came from beyond the border -- carrying destructive, Takfiri and extremist ideologies – started threatening Lebanon,” Mansour told an extraordinary meeting of the council of Arab foreign ministers.

Israeli Prime Minister Benjamin Netanyahu on Wednesday stressed that Israel will “exert utmost effort” to prevent the delivery of “advanced arms” to Hizbullah from Syria.

“Israel will continue to exert utmost effort to present the delivery of advances arms to Hizbullah, Hamas and other terrorist groups,” Netanyahu said in a speech at the Israeli Knesset.

Bulgaria's new foreign minister said Wednesday that evidence Hizbullah was behind a bomb attack last July on its soil that killed five Israelis was "circumstantial" and "not categorical" at this stage.

The minister, Kristian Vigenin, said that as a result, Sofia would not back the European Union labeling the Lebanese organization's military wing a "terrorist" entity without proof from other cases.

Hizbullah stated on Wednesday that the party's “achievement” in the Syrian border town of al-Qusayr dealt a “severe blow to the American-Israeli-Takfiri scheme.”

"The withdrawal of the opposition's fighters from al-Qusayr is a knockdown to the scheme of the United States, Israel and the Takfiris,” the party's deputy chief Sheikh Naim Qassem expressed after a meeting with Syrian Social National Party Vice President Toufiq Mhanna.

Bahrain on Wednesday launched investigations and started gathering information about “Hizbullah's interests” in the kingdom ahead of taking “measures” against them.

Bahraini Interior Minister Sheikh Rashed bin Abdullah al-Khalifa has “directed security bodies to probe possible Hizbullah activity in the Kingdom of Bahrain, including financial investments, commercial and economic activity, operations disguised as charity, bank accounts, money transfers and individual members of the organization, to take the required legal procedures,” said a statement carried by Bahrain's state news agency.