The Saudi embassy in Beirut said the advisory was issued due to the “repercussions of the current events,” noting that a travel ban to Lebanon had already been in place for several years.

The warning comes as Israeli forces deploy thousands of troops into southern Lebanon, aiming to secure territory up to the Litani River, about 30 kilometers from the border.

Since March 2, more than one million people have been displaced across Lebanon, according to the United Nations High Commissioner for Refugees. Around 136,000 are sheltering in approximately 660 collective sites, many of them overcrowded schools with limited sanitation access.

UNHCR representative Karolina Lindholm Billing said the situation on the ground was “extremely worrying,” warning of a real risk of humanitarian catastrophe if the conflict continues.

“Lebanon was already facing multiple crises, and this massive displacement is adding immense pressure,” she said, adding that affected civilians repeatedly expressed a desire to return home.

The UN refugee agency has appealed for more than $60 million to scale up its response, but officials say needs are rising faster than available funding as displacement accelerates.

The developments underscore mounting regional fallout from the conflict, with foreign governments increasingly issuing advisories to protect their citizens amid deteriorating security conditions.

The Israeli military said it had begun a “wave of strikes” on positions in the capital’s southern districts, including areas such as Tahouitet Al-Ghadir, following evacuation warnings issued to residents earlier in the day.

Lebanon’s state-run National News Agency reported multiple strikes across south Beirut, as well as in southern and eastern regions of the country. The health ministry said an attack on the town of Saksakiyeh in the Sidon district killed six people, including three children, and wounded 17 others.

In the Bekaa region, authorities said a strike killed a pregnant woman and injured seven people. Lebanese officials estimate that more than 1,100 people have been killed since the escalation began, with over one million displaced, including around 136,000 sheltering in collective facilities.

Hezbollah said its fighters had engaged Israeli troops “at point-blank range” in the villages of Bayada and Shamaa, near the border, and claimed additional attacks on Israeli targets.

It also said it had fired a surface-to-air missile at an Israeli warplane over Beirut. The claims could not be independently verified.The Israeli military said its forces had uncovered weapons, including anti-tank missiles, in a school in Khiam, a strategic border town that has seen repeated fighting.

Israeli troops are advancing into multiple towns in southern Lebanon as part of efforts to establish a buffer zone extending to the Litani River, aimed at pushing Hezbollah forces away from the frontier and securing northern Israeli communities.

Army spokesperson Effie Defrin said Hezbollah continued to operate from southern Lebanon despite earlier commitments by the Lebanese government, adding that Israeli forces would act to neutralize the group if it was not disarmed.

The United Nations High Commissioner for Refugees warned that Lebanon faces a worsening humanitarian crisis, with representative Karolina Lindholm Billing saying the risk of catastrophe was “real.”International Committee of the Red Cross regional director Nicolas Von Arx said civilians were bearing the brunt of the conflict and urged all parties to ensure their protection.

The escalation follows Hezbollah’s entry into the conflict on March 2, when it fired rockets toward Israel in response to the killing of Iran’s supreme leader, triggering a broader regional confrontation.