The warning came as Israeli authorities issued new displacement orders for 16 areas south of the Litani River, instructing residents to move toward the nearby city of Saida, adding further pressure on already strained communities and humanitarian operations.

U.N. spokesperson Stephane Dujarric said civilians continued to bear the brunt of the hostilities, with women and children disproportionately affected by displacement, overcrowded shelters and worsening living conditions.

He said reports indicated rising levels of psychological distress, family separation and increased risks of gender-based violence, particularly in temporary shelters where access to protection services remains limited.

“We and our partners are responding to the mounting needs where access allows,” Dujarric told reporters, while noting that humanitarian operations remain constrained by insecurity and restricted access in several affected areas.

A new joint analysis by the U.N. Food and Agriculture Organization and the World Food Programme found that a sharp escalation in violence had reversed earlier food-security improvements and pushed Lebanon back into a crisis phase.

According to the latest Integrated Food Security Phase Classification assessment, around 1.24 million people nearly one in four of those surveyed — are projected to face IPC Phase 3, or crisis-level, food insecurity or worse during the April-to-August period.

At that level, households are typically forced to adopt severe coping strategies such as skipping meals, reducing food quality or selling essential assets to afford basic supplies.

Lebanon has been grappling with overlapping economic, political and security crises for years, with inflation, currency collapse and weakened state institutions already undermining access to food and public services before the latest surge in violence.

Humanitarian agencies also warned that funding shortfalls were limiting relief efforts. The Lebanon Flash Appeal has received just over $117 million so far, only 38% of the $308 million required to meet urgent needs, according to U.N. figures.

Dujarric said that without immediate additional funding and improved humanitarian access, conditions were likely to deteriorate further, leaving more families exposed to hunger, displacement and prolonged hardship.

Defence Minister said ground operations and air strikes had achieved “many gains” but had not fully neutralised Hezbollah’s presence in southern Lebanon. He added that areas between Israel’s declared security zone and the remained uncleared of militants and weapons.
Katz said the remaining objectives could be achieved either through diplomatic channels or renewed military action once the ceasefire expires. Under the terms of the truce, Israel retains the right to act against what it describes as imminent or ongoing threats from Hezbollah.

As the ceasefire came into force at midnight, displaced civilians in southern Lebanon began returning to their homes after weeks of conflict. However, Katz warned that a resumption of fighting would likely force another evacuation of those areas.

Israel has maintained a military presence in parts of southern Lebanon and established a security buffer zone along the border, which it says has been cleared of militant infrastructure and residents. The defence minister said operations would continue to target remaining positions, including structures Israel alleges were used for militant activity.

According to details released by the United States, the ceasefire framework also places responsibility on Lebanon, with international backing, to prevent Hezbollah from launching attacks against Israeli targets.

The developments highlight the fragility of the ceasefire and ongoing tensions along the Israel-Lebanon frontier, where both sides remain on alert despite a temporary halt in fighting.

The truce, which began at midnight local time, marks a significant step in diplomatic efforts linked to a broader regional de-escalation involving tensions between the United States and . However, the Lebanese military said Israeli actions in the south constituted breaches of the ceasefire and urged residents to delay their return.

Despite the warnings, convoys of civilians were seen heading south toward their homes, with traffic building along coastal routes and damaged infrastructure, including bridges hit during recent hostilities. Residents cited strong attachment to their homes as a driving force behind their return.

International reactions to the truce were broadly supportive. The Kremlin welcomed the agreement, expressing hope it would prevent renewed clashes, while called for its continuation and urged both sides to uphold their commitments. also endorsed the ceasefire, describing it as a step toward lasting peace, while Iran’s foreign ministry framed it as part of a wider understanding tied to regional de-escalation.

The conflict in Lebanon intensified in early March when launched rocket attacks toward Israel, triggering a series of Israeli strikes. Fighting continued until shortly before the truce took effect, with casualties reported on both sides.

Under the ceasefire framework, mediated with US involvement, Israel retains the right to act against perceived imminent threats, while Lebanon is expected, with international support, to prevent Hezbollah from carrying out attacks. Israeli Prime Minister said the agreement could open the door to a broader peace arrangement but reiterated that disarmament of Hezbollah remains a key condition.

US President said he had spoken with both Israeli and Lebanese leaders ahead of the truce and suggested the possibility of high-level talks in Washington in the coming days, a development that could mark a significant diplomatic milestone if realised.

The ceasefire remains fragile, with both sides maintaining heightened alert levels as the situation on the ground continues to evolve.