U.S. President Donald Trump said U.S. negotiators will be in Pakistan Monday to resume talks on ending the war with Iran, as he again threatened to destroy its power plants and bridges if no deal is reached.

In a social media post Sunday, Trump also accused Iran of violating the countries' two-week ceasefire with attacks Saturday in the Strait of Hormuz.

Lebanon's military said Sunday it had reopened a road and bridge damaged by Israeli strikes in the country's south, as a 10-day truce holds between Hezbollah and Israel.

Israel's military said on Sunday that a soldier died during combat in southern Lebanon, where a temporary ceasefire had come into effect this week.

"Lidor Porat, aged 31, from Ashdod, a soldier in the 7106th Battalion, 769th Regional Brigade, fell during combat in southern Lebanon," the Israeli military said in a statement, without providing further details.

Israeli forces on Saturday carried out demolitions in the southern Lebanese town of Bint Jbeil, the scene of intense fighting with Hezbollah prior to the recently agreed 10-day truce, Lebanese state media reported.

Hezbollah leader Naim Qassem said overnight that the ongoing 10-day truce with Israel cannot be one-sided, vowing that his fighters would respond to Israeli attacks on Lebanon.

After the ceasefire in Lebanon took hold, Samah Hajoul headed back to her apartment in Beirut's southern suburbs -- but only long enough to grab fresh clothes, feeling safer in her tent as she wonders whether the truce will last.

Lebanon's president and prime minister have discussed preparations for the first direct negotiations with Israel in decades.

In a statement, the office of President Joseph Aoun said he and Prime Minister Nawaf Salam conducted "an assessment of the post-ceasefire phase and the ongoing efforts to consolidate it," and discussed "Lebanese readiness for the anticipated negotiations" with Israel.

Senior Hezbollah official Mahmoud Qamati said that his group was not concerned by Lebanon's planned direct talks with Israel, labelling them a failure.

In a press conference in Beirut's southern suburbs, Qmati said his group was "not concerned with the negotiations being conducted by the state," saying they were "a failure, weak, defeated... and submissive negotiations."

Hezbollah on Saturday denied it was involved in a deadly attack on United Nations peacekeepers (UNIFIL) in southern Lebanon, after France accused the group of being behind the incident.

"Hezbollah denies any connection to the incident that occurred with UNIFIL forces in the Ghandouriyeh-Bint Jbeil area, and calls for caution in making judgments and assigning responsibilities regarding the incident pending the Lebanese army's investigations to determine the full circumstances of the incident," the group said in a statement.

The strategic Strait of Hormuz was again closed on Sunday in the stand-off between Iran and the United States, with Iran's powerful parliament speaker signalling a final peace deal remained "far" off despite some movement in negotiations.