Iran's foreign ministry has said a new round of nuclear talks with the United States is being planned for Sunday, after President Donald Trump said it was expected on Thursday.

"The next round of Iran-US indirect talks is being planned for next Sunday in Muscat," foreign ministry spokesman Esmaeil Baqaei said in a statement Tuesday, adding foreign minister and chief negotiator Abbas Araghchi would this week attend the Norway's Oslo Forum, a gathering of conflict mediators.

U.S. President Donald Trump should tell Israel's leader Benjamin Netanyahu "enough is enough", a former Israeli prime minister told AFP, denouncing the continuation of the war in Gaza as a "crime" and insisting a two-state solution is the only way to end the conflict.

Ehud Olmert, prime minister between 2006-2009, said in an interview in Paris that the United States has more influence on the Israeli government "than all the other powers put together" and that Trump can "make a difference".

The Israeli military said it intercepted a "projectile" on Tuesday that had entered Israeli airspace from Gaza, where it has fought Palestinian militant group Hamas for more than 20 months.

"Following the sirens that sounded at 10:53 am in the area of the Zikim beach, one projectile that crossed from the northern Gaza Strip into Israeli territory was intercepted," the military said.

The foreign ministers of Iran, Syria, Saudi Arabia, Egypt and Oman will meet in Norway this week at an annual peace forum, the Norwegian government announced on Tuesday.

The ministers, including Iran's foreign minister and chief nuclear negotiator Abbas Araghchi, will take part on Wednesday and Thursday in the Oslo Forum, an annual gathering dedicated to peace issues, held behind closed doors in Lorenskog some 15 kilometers outside the Norwegian capital.

An Israeli strike killed a Lebanese father and son Tuesday in a southern village, the Lebanese health ministry and state media said, the latest deaths despite a November ceasefire.

A second son was also wounded in the strike in Shebaa, the state-run National News Agency reported. There was no immediate comment from the Israeli military.

Police ordered the public to disperse from downtown Los Angeles after further unrest, with cars torched and security forces firing tear gas at protesters, in the wake of Donald Trump's deployment of National Guard troops to America's second-biggest city.

Iran said Monday it will soon present a counter-proposal on a nuclear deal with the United States, after it had described Washington's offer as containing "ambiguities".

Tehran and Washington have held five rounds of talks since April to thrash out a new nuclear accord to replace the deal with major powers that U.S. President Donald Trump abandoned during his first term in 2018.

Israeli forces intercepted a Gaza-bound aid boat on Monday, preventing the activists on board -- including Swedish campaigner Greta Thunberg -- from reaching the blockaded Palestinian territory.

Donald Trump ordered 2,000 National Guard troops to the streets of Los Angeles on Saturday in what the White House said was an effort to quell "lawlessness" after sometimes-violent protests erupted over immigration enforcement raids.

Gaza's civil defense agency said Saturday that Israeli forces had killed at least 36 Palestinians, six of them in a shooting near a US-backed aid distribution center.