Lebanon and Israel's US ambassadors had previously met twice in Washington over the past weeks, in an attempt to end the war that started when Hezbollah drew Lebanon into the Middle East conflict on March 2.

Foreign Minister Youssef Raggi said in a statement Friday that Lebanon's goals from the negotiations were "consolidating the ceasefire, securing Israel's withdrawal from occupied Lebanese territory, and restoring the state's full sovereignty over its national territory".

Despite a truce that has been in place since April 17, Israel has repeatedly bombed Lebanon, mostly the country's south, and retained control over border areas.

In a statement from the presidency, Aoun said he and Karam discussed "preparations for the meeting scheduled for next Thursday in Washington between the Lebanese, American and Israeli delegations".

Aoun provided Karam with "directives outlining Lebanon's firm positions regarding the negotiations", the statement added.

A Lebanese official who requested anonymity told AFP that Karam "will head to Washington soon" to lead the Lebanese delegation.

The Lebanese ambassador to the US, the deputy chief of mission and a military representative will also be part of the delegation, the official added.

The ambassador-level meeting on April 14 was the first of its kind in decades, as the two countries have officially been at war since 1948.

Following the first round of talks, US President Donald Trump announced a 10-day ceasefire, with a three-week extension announced after the second round.

Trump also said he expected Aoun and Israeli Prime Minister Benjamin Netanyahu to meet jointly with him at the White House "over the next couple of weeks".

But Aoun said on Monday that "we must first reach a security agreement and stop the Israeli attacks on us before we raise the issue of a meeting between us".

US Secretary of State Marco Rubio, at a news conference on Tuesday, said "there's no problem between the Lebanese government and the Israeli government" and that Hezbollah was the issue.

"By and large, I think a peace deal between Lebanon and Israel is eminently achievable and should be," Rubio said.

Hezbollah is strongly opposed to the direct talks, calling them a "sin" and urging Beirut to withdraw from them.

Israeli strikes have killed more than 2,700 in Lebanon since March 2, including dozens since the ceasefire was announced.