European leaders take the stage on Tuesday ahead of U.S. President Donald Trump at the gathering of global elites in Davos.

Trump said he had agreed to a meeting of "various parties" about his attempt to take over Greenland at the Davos gathering of global elites this week.

Negotiations between Syria's President Ahmed al-Sharaa and Mazloum Abdi, the head of the Kurdish-led Syrian Democratic Forces, have collapsed, a Kurdish official told AFP on Tuesday.

"The negotiations held yesterday in Damascus between General Mazloum and Mr Al‑Sharaa have collapsed entirely," the official said, blaming the central government for the breakdown.

U.S. President Donald Trump's threats to impose 200 percent tariffs on French wine and champagne are "unacceptable" and "ineffective," a source close to French President Emmanuel Macron told AFP on Tuesday.

"Tariff threats to influence our foreign policy are unacceptable and ineffective," the source said after Trump made the threat over France's intentions to decline his invitation to join his "Board of Peace."

Violent scuffles erupted on Tuesday between Turkish police and pro-Kurdish protesters at the border with Syria, where Damascus has launched an offensive against the Kurdish-led Syrian Democratic Forces (SDF), an AFP reporter said.

Police fired tear gas and water cannon at the protesters and stopped them from crossing the border. The demonstrators hurled stones at the police.

Syria's army said three soldiers were killed on Monday in attacks by Kurdish fighters, while the Kurdish-led Syrian Democratic Forces accused the government of launching attacks despite a ceasefire announced a day earlier.

In a statement to state news agency SANA, the army said three soldiers were killed and others wounded in two attacks, without saying where, adding that "some terrorist groups... are attempting to disrupt the implementation" of the ceasefire deal.

Israeli Prime Minister Benjamin Netanyahu convened a meeting of his ruling coalition partners on Sunday after objecting to the composition of a Gaza advisory panel formed by the White House, according to an official and media reports.

Kurdish-led forces withdrew on Sunday from Syria's largest oil field, a conflict monitor said, as government troops extended their grip over swathes of territory in the country's north and east.

Iranian authorities have said they are considering "gradually" restoring internet access after imposing a sweeping communications shutdown across the country more than a week ago, local media reported.

Iran's supreme leader Ayatollah Ali Khamenei on Saturday accused U.S. President Donald Trump of being responsible for "casualties" during a protest wave in the country that rights groups said was met with a deadly crackdown.

U.S. President Donald Trump on Friday gave a key role in post-war Gaza to former British prime minister Tony Blair and appointed a U.S. officer to lead a nascent security force.