Iran live updates: Trump threatens Iran infrastructure strikes if talks fail

A United Nations peacekeeper was killed over the weekend "when a projectile exploded in a UNIFIL position" in Southern Lebanon, according to the organization. Another peacekeeper was critically injured.

UNIFIL, the U.N. Interim Force in Lebanon, said it does not know where the projectile originated from, and an investigation is ongoing.

"Too many lives have been lost on both sides of the Blue Line in this conflict. There is no military solution. The violence must end," UNIFIL said.

-ABC News' Victoria Beaulé

The Lebanese Ministry of Public Health said in an update on Sunday that 1,238 people have been killed since the start of the war in Lebanon, with 3,543 people injured.

The health ministry said 49 people were killed on Sunday, with 116 injured.

Pakistan Foreign Minister Ishaq Dar announced on Sunday that the country would "host and facilitate meaningful talks between the two sides in coming days, for a comprehensive and lasting settlement of the ongoing conflict."

Dar made the announcement after a meeting in Islamabad with foreign ministers from Saudi Arabia, Turkey and Egypt.

Neither the U.S. nor Iran has confirmed when these talks would take place, whether they will be direct or indirect, and who will be involved in them for either side. In recent days, the U.S. has sent the Iranian regime, through the Pakistani government, a 15-point proposal for ending the conflict.

"Pakistan also has a very important relationship with the United States. We have remained actively engaged with the U.S. leadership as well, as part of our efforts to de-escalate the situation and finding a peaceful resolution of the conflict," Dar said. "In this context, Pakistan is very happy that both Iran and the U.S. have expressed their confidence in Pakistan to facilitate the talks."

Dar also said he had spoken to the Chinese foreign minister and the United Nations secretary general, both of whom he said expressed their support for the initiative.

-ABC News' Habi Khan

Israeli Prime Minister Benjamin Netanyahu said Sunday that he had instructed the Israeli military to deepen its incursion into southern Lebanon to expand the "security zone in order to finally thwart the threat of invasion and to keep the anti-tank missile fire away from our border."

Speaking during a visit to the Israel Defense Forces Northern Command, Netanyahu said that in addition to three buffer zones created - in Syria, Gaza and Lebanon - "I have now instructed to further expand the existing security zone [in Lebanon] in order to finally thwart the threat of invasion and to keep the anti-tank missile fire away from our border.

Netanyahu also said that the buffer zone in Gaza is "more than half of the area of the strip."

"We are striking with tremendous force at Iran and its proxies," Netanyahu said, adding that Iran, Hezbollah and Hamas "are no longer terrorist armies that threaten our existence. These are defeated enemies, who are fighting for their existence."

The IDF said Saturday morning that its strikes on Hezbollah infrastructure continued across Lebanon, after targeting dozens of sites in the south of the country overnight.

The IDF also claimed that a targeted strike in the Lebanese capital of Beirut on Friday had killed two senior Hezbollah officials, Ayyoub Hussein Yaacoub and Yasser Mohammad Mubarak.