The Israeli army is preparing for a prolonged offensive against Hezbollah, aiming to weaken the group to prevent the constant evacuation of northern residents, according to sources cited by the Financial Times.

The United Nations said Tuesday that more than 100,000 people had been newly displaced within Lebanon in just 24 hours amid the war raging in the Middle East.

"As of today, more than 667,000 people in Lebanon have now registered on the (Lebanese) government's online platform as displaced -- and this is an increase of 100,000 in just one day," said Karolina Lindholm Billing, the U.N. refugee agency's representative in Lebanon.

President Joseph Aoun voiced Tuesday his full support for the Lebanese Army as he met with Army Commander Rodolphe Haydal and Defense Minister Michel Menassah in Yarzeh.

Aoun said he will stand "as a bulwark" against any attacks on the military institution or its leadership.

Israel's military said Tuesday it would soon strike Hezbollah infrastructure in the southern Lebanese cities of Tyre and Sidon, warning residents to move away from targeted buildings.

"Urgent warning to the residents of Tyre and Sidon. The IDF will soon attack military infrastructure belonging to the terrorist organisation Hezbollah," one of the military's Arabic-language spokesmen, Avichay Adraee, posted on X.

Syria said Iran-backed Hezbollah had fired artillery shells into its territory from Lebanon overnight, state media reported on Tuesday, amid the ongoing conflict between Israel and the Lebanese Shia movement.

Syrian army officials said artillery shells fired from Lebanon landed near the town of Serghaya, west of Damascus, the state news agency SANA reported on Tuesday.

The head of Hezbollah's parliamentary bloc Mohammad Raad vowed to continue fighting Israel "whatever the cost," on Monday, in remarks broadcast by Hezbollah's Al-Manar TV.

The Lebanese government proposed direct negotiations with Israel — through the Trump administration — aimed at ending the war and reaching a peace agreement, five sources with knowledge of the matter told U.S. news portal Axios.

Hezbollah said on Monday that it had targeted the Israeli Home Front Command base in Ramla, near Tel Aviv, with "advanced missiles" as the war between the pro-Iranian group and Israel hit the one-week mark.

Syrian President Ahmed al-Sharaa on Monday declared his support for his Lebanese counterpart Joseph Aoun in the latter's effort to disarm Hezbollah, state media reported.

Israel announced on Monday that its military had killed the head of Hezbollah's Nasr unit operating in part of southern Lebanon during renewed fighting with the Iran-backed group.