The United Nations Interim Force in Lebanon (UNIFIL) has accused Israel of constructing walls inside Lebanese territory near the UN-demarcated Blue Line, the de facto border between the two nations. UNIFIL stated that the walls, built by the Israel Defense Forces (IDF), encroached on Lebanese sovereignty and rendered over 4,000 square meters of land inaccessible to Lebanese citizens. The UN peacekeeping force confirmed the violations through surveys conducted in October and November 2025. Israel, however, denied the allegations, asserting that the wall was part of a broader security plan initiated in 2022 and did not cross the Blue Line. The IDF emphasized that the construction was aimed at reinforcing the northern border following lessons learned from recent conflicts. The dispute arises amidst ongoing tensions between Israel and the Lebanese militant group Hezbollah, despite a truce brokered in November 2024. UNIFIL has urged Israel to respect the Blue Line and withdraw from Lebanese territory, citing violations of UN Security Council Resolution 1701, which ended the 2006 conflict between Israel and Hezbollah. The resolution also underpinned the 2024 ceasefire, which sought to halt over a year of hostilities. UNIFIL has formally advised the IDF of its findings and requested the removal of the walls.