Harsh weather moved west on Monday as a polar vortex was expected to grip the Rockies and the northern Plains after winter storms pummeled the eastern U.S. over the weekend, killing at least 10 people, including nine victims in Kentucky who died during flooding from heavy rains.

The National Weather Service warned of "life-threatening cold" into Tuesday, with temperatures in northeastern Montana predicted to dip as low as 45 degrees below zero (-42.7 degrees Celsius) with wind chills down to 60 below (-51 degrees Celsius).

Paul Simon and Sabrina Carpenter duetted on Simon's "Homeward Bound" to open the show, five-decade "Saturday Night Live" luminary Steve Martin delivered the monologue, and Paul McCartney gave an epic closing to a 50th anniversary special celebrating the sketch institution that was overflowing with famous former cast members, superstar hosts and legendary guests.

The 83-year-old Simon has been essential to "SNL" since its earliest episodes in 1975, and told the 25-year-old pop sensation of the moment Carpenter that he first performed "Homeward Bound" on "SNL" in 1976.

Ukrainian President Volodymyr Zelensky says he directed his ministers not to sign off on a proposed agreement to give the United States access to Ukraine's rare earth minerals because the document was too focused on U.S. interests.

The proposal, which was a key part of Zelensky's talks with U.S. Vice President JD Vance on the sidelines of the Munich Security Conference on Friday, did not offer any specific security guarantees in return, according to one current and one former senior Ukrainian official familiar with the talks.

French President Emmanuel Macron called leaders from key European Union nations and the United Kingdom to his ornate Elysee Palace on Monday for an emergency meeting on how to react to the U.S. diplomatic blitz on Ukraine, which left the once rock-solid partner as a potential political liability.

The first visit by top U.S. officials to Europe has left the impression that the Trump administration was ready to embrace the Kremlin while it cold-shouldered many of its age-old European allies.

Ukrainian President Volodymyr Zelensky traveled to the United Arab Emirates late Sunday as momentum grows for potential peace talks ending Moscow's war on the country.

U.S. President Donald Trump last week suggested he would be meeting Russian President Vladimir Putin in Saudi Arabia. The UAE, home to Abu Dhabi and Dubai, long has been floated as a possible site for peace talks as well given the large population of Russian and Ukrainian expatriates who have flooded the country since the war began, and due to the Emirates' work on prisoner exchanges in the past.

Experts are returning to Syria's war-ravaged heritage sites, hoping to lay the groundwork for restoring them and reviving tourism, which they say could provide a much-needed boost to the country's decimated economy after nearly 14 years of war.

Once-thriving landmarks like the ancient city of Palmyra and the medieval Crusader castle of Crac des Chevaliers remain scarred by years of conflict, but local tourists are returning to the sites, and conservationists hope their historical and cultural significance will eventually draw international visitors back.

Israel issued a tender for the construction of nearly 1,000 additional settler homes in the occupied West Bank, an anti-settlement watchdog said Monday.

Peace Now says the development of 974 new housing units would allow the population of the Efrat settlement to expand by 40% and further block the development of the nearby Palestinian city of Bethlehem. Hagit Ofran, who leads the group's settlement monitoring, said construction can begin after the contracting process and issuing of permits, which could take another year at least.

Top Russian officials will hold talks with U.S. counterparts on restoring ties, negotiating a peaceful settlement to the war in Ukraine and preparing a meeting between Russian President Vladimir Putin and U.S. President Donald Trump, the Kremlin said Monday.

Kremlin spokesman Dmitry Peskov said that Russian Foreign Minister Sergey Lavrov and Putin's foreign affairs adviser Yuri Ushakov will fly to the Saudi capital later in the day to take part in the talks set for Tuesday.

Israel's security cabinet was set to discuss on Monday the next phase of the ceasefire with Hamas, as top U.S. diplomat Marco Rubio began a visit to Saudi Arabia where he will push Donald Trump's proposal for a U.S. takeover of Gaza.

Rubio travelled to Riyadh from Israel, where he kicked off his first Middle East trip as Trump's secretary of state.

Hezbollah chief Sheikh Naim Qassem said in a televised speech Sunday that Israel "must withdraw from all of the Lebanese territory that it has occupied" on Feb. 18.