The Lebanese Ministry of Health stated on the 12th that since the resumption of hostilities between Lebanon and Israel on March 2, Israeli attacks on Lebanon have resulted in 2,055 deaths and 6,588 injuries. The statement indicated that among the fatalities were 165 children, with an additional 644 children injured. According to reports, British Prime Minister Keir Starmer and French President Emmanuel Macron held a telephone conversation on the 12th to discuss the situation in the Middle East. Both Starmer and Macron agreed that any ceasefire agreement must include Lebanon to maintain broader regional stability. They also recognized the strategic importance of the Strait of Hormuz for global trade and energy supplies and emphasized the need to cooperate with partners to ensure freedom of navigation.

Israel launched new attacks on Lebanon. Hezbollah claimed to have attacked the headquarters of the Israeli Army's 146th Division. According to Lebanese sources on the 12th, Israeli forces and Lebanese Hezbollah engaged in intense clashes in the southern Lebanese town of Bint Jbeil. Hezbollah issued a statement later that evening, announcing new attacks on northern Israel. Israeli sources reported that the Israeli military recently surrounded Bint Jbeil and targeted Hezbollah's local strongholds, infrastructure, and personnel. In a statement on the evening of the 12th, Hezbollah claimed it had launched rocket attacks on the headquarters of the Israeli Defense Forces' 146th Division and other locations in northern Israel. On the same day, Israeli Prime Minister Benjamin Netanyahu visited the so-called "buffer zone" in southern Lebanon, which is controlled by Israel. He stated that "the war continues, including within the buffer zone in Lebanon," and that the Israeli military has more work to do. Previous reports indicated that Israel agreed to "begin formal peace talks" with Lebanon in Washington, D.C., on the 14th but refused to discuss a ceasefire with Hezbollah.

UN vehicles were rammed and surveillance equipment was vandalized. The United Nations Interim Force in Lebanon (UNIFIL) condemned Israel. A UNIFIL statement issued on the 12th condemned the Israeli Defense Forces for ramming its vehicles and damaging its surveillance equipment in southern Lebanon. The statement detailed that Israeli forces drove "Merkava" tanks to ram UNIFIL vehicles on two separate occasions, with one incident causing significant damage to a vehicle. Israeli forces also blocked the road leading to a UNIFIL position in the town of Bayada. Over the past week, Israeli forces conducted multiple "warning shots" in the area, striking and damaging clearly marked UNIFIL vehicles. In one instance, a bullet landed approximately one meter from a peacekeeper who had exited a vehicle. The statement further noted that Israeli forces have repeatedly restricted the freedom of movement of peacekeepers and have vandalized surveillance camera equipment at UNIFIL's Naqoura headquarters and several positions along the temporary "Blue Line" border between Lebanon and Israel. Israeli forces also spray-painted parts of the headquarters' main gate windows, obstructing UNIFIL's observation of the perimeter. UNIFIL stated that these actions endanger the safety of peacekeepers, hinder their ability to fulfill their duties, and violate United Nations Security Council Resolution 1701.

The European Union strongly condemns Israel for launching attacks on Lebanon. EU foreign affairs spokesperson Anwar Anuni stated on the 12th that the EU strongly condemns Israel's attacks on Lebanon and demands that Israel immediately cease its assaults targeting Lebanese territory. Anuni expressed that the recent Israeli attacks on Lebanon have caused significant civilian casualties and severe damage to civilian infrastructure, representing an "extremely serious escalation" that poses an "unacceptable threat" to civilian lives and regional stability. He stated that the EU demands an immediate halt to the attacks in Lebanon. All parties must fully comply with international humanitarian law, ensuring the protection of civilians, civilian infrastructure, UN peacekeepers, and humanitarian personnel. When discussing Israel's announcement of initiating talks with Lebanon, Anuni described it as a "positive development," with the EU looking forward to the prompt and substantive commencement of negotiations leading to results. Anuni also noted that the EU has taken note of statements issued by relevant parties following talks between the United States and Iran in Islamabad, Pakistan's capital. He commended Pakistan's mediation efforts aimed at de-escalating the situation and reaffirmed that diplomacy is key to resolving the related issues.