President Michel Aoun on Sunday pledged that he will remain a “bulwark” in the face of “anyone trying to undermine the content” of his presidential oath of office.

“If a promise is sacred, an oath is much more sacred! The oath of respecting the Constitution and laws and preserving the country and its territorial integrity,” Aoun tweeted.

Following a request from the Lebanese Armed Forces (LAF), the United Nations Interim Force in Lebanon (UNIFIL) on Sunday deployed a detachment of multinational force to Beirut in order to assist Lebanese authorities with their efforts to deal with the aftermath of the tragic 4 August explosions, UNIFIL said.

The deployment early this morning follows the authorization by the U.N. Security Council for the Mission to take “temporary and special measures” to provide support to Lebanon and its people in the aftermath of the explosions.

Ex-PM Saad Hariri announced Sunday that he is not a candidate for the PM post following the resignation of PM-designate Mustafa Adib.

“In view of what is circulating in the media, the press office of former Prime Minister Saad Hariri stresses that he is not a candidate for the formation of the new government,” the office said in a statement.

Lebanon was left reeling Sunday without the slightest prospect of ending multiple crises, after its premier-designate stepped down following the failure of talks to form a government, despite international pressure.

Mustafa Adib's resignation on Saturday ended efforts to hammer out a reformist government in the wake of a colossal August 4 explosion in Beirut that killed 190 people, injured thousands and ravaged large parts of the capital.

The binding parliamentary consultations to name a new premier following the resignation of PM-designate Mustafa Adib will not be imminent, media reports said.

“The call for parliamentary consultations to pick a prime minister will not be quick,” Presidency sources told Asharq al-Awsat newspaper in remarks published Sunday.

Free Patriotic Movement chief Jebran Bassil has tested positive for coronavirus, his office said Sunday.

The statement from his office said Bassil will isolate until he recovers, adding that the infection level is still "low and acceptable."

Israel will hold rare talks with Lebanon next month in an effort to resolve a longstanding maritime border dispute, an Israeli official said.

The official said Energy Minister Yuval Steinitz will lead the Israeli delegation in talks mediated by the United States. Representatives from the three countries are likely to speak by video conference because of the coronavirus pandemic, the official said.

Gunmen opened fire on an army post in the northern area of Araman at dawn Sunday, triggering a shootout in which two soldiers and one gunman were killed, the army said.

Another gunman fled to an unknown destination, according to an army statement.

From the Beirut port blast to premier-designate Mustapha Adib stepping down on Saturday after less than a month of trying to form a new cabinet, here are developments in crisis-hit Lebanon:

Mustapha Adib, a little-known diplomat tasked with forming a new crisis government to save Lebanon from the brink, resigned Saturday after less than a month as premier designate.