South Lebanon faces an impending security vacuum as the United Nations Interim Force in Lebanon prepares to end its mission on December 31, 2026, amid intense diplomatic friction and unresolved border disputes.
The departure of the international force, established under UN Security Council Resolution 425 following the 1978 Israeli invasion, leaves the Lebanese state grappling with the future of southern security, according to reporting by التلفزيون العربي. With no clear consensus on alternative international frameworks, political analysts and diplomats are divided over whether the Lebanese Armed Forces can independently secure the region while Israeli forces maintain positions across the southern territory.
فشل المهمة الدولية في تحقيق تفويضها القانوني الأساسي
Professor of political science and international law Ali Fadlallah told the “Hewarate al-Arabi” program broadcast by التلفزيون العربي that the international mission never fully achieved its foundational legal mandate to verify immediate Israeli withdrawals, despite playing a vital mediation role over nearly five decades.
Political researcher Ali Mourad argued that Lebanon is unprepared to assume full security responsibilities in the south given that the conditions surrounding the decision for a phased withdrawal remain unchanged. Mourad told التلفزيون العربي from Beirut that the mission’s conclusion will leave southern regions exposed and facilitate Israeli military movement.
“Lebanon is not ready to bear full security responsibility in the south after the end of the UNIFIL mission.”
مقترحات بديلة لهيكلية الأمن بعد اليونيفيل
International discussions are actively exploring post-UNIFIL security architectures. While French Foreign Minister Jean-Noël Barrot addressed international consensus during G7 meetings to prevent a security void, alternative models are taking shape in diplomatic backchannels.
Reporting by المدن highlights an emerging American push to replicate the Multinational Force and Observers model used in the Sinai Peninsula, or to establish civilian monitoring teams to replace traditional UN oversight. Meanwhile, diplomatic sources cited by النهار point to a potential softening in the United States position regarding Resolution 1701 following recent G7 talks in Paris.

Domestic Friction and the Question of Joint Patrols
Beyond international frameworks, the impending exit has triggered intense domestic debate regarding military command and potential security arrangements. National Liberal Party leader and parliamentary bloc member MP Camille Chamoun told MTV Lebanon that the departure of the international force does not represent an irreplaceable loss, arguing that the mission failed to prevent the construction of military infrastructure in its vicinity.
“The goal of removing the international force and not extending its mandate is to reach a stage where joint patrols between the Lebanese army and Israeli forces are imposed as a fait accompli.”
As the December 31 deadline approaches, Lebanese authorities face pressure to handle competing international proposals while managing deep domestic divisions over national defense strategy and border sovereignty.