These are the headlines you Need2Know:
* **Trump Threatens Iran on Twitter:**
President Trump lashed out against Iranian President Hassan Rouhani late Sunday, warning him -- in an all-caps [tweet](https://twitter.com/realDonaldTrump/status/1021234525626609666) -- to "never, ever threaten the United States again or you will suffer the consequences the likes of which few throughout history have ever suffered before." His tweet comes in response to Rouhani's warning to Trump that "war with Iran is the mother of all wars." Read the details on [NPR.](https://www.npr.org/2018/07/23/631454795/trump-to-irans-president-never-ever-threaten-the-u-s-again)
* **Deadly Shooting in Toronto:**
Two people died and a dozen others were wounded in Toronto after a shooter opened fire in a popular neighborhood late Sunday. Neither of the victims has been identified. Authorities say the gunman is also dead, and they are now investigating the motive behind the shooting. Read the latest on [CNN.](https://www.cnn.com/2018/07/22/americas/toronto-restaurant-shooting/index.html)
* **Mourning Boat Accident Victims:**
The 17 victims of the duck boat accident in Missouri were remembered in a service on Sunday near the site of the accident. The memorial came as federal investigators are examining the boat's black box and video footage. Read more at [CBS News.](https://www.cbsnews.com/news/branson-community-mourns-missouri-duck-boat-victims-today-2018-07-22/)
* **Italian Wins the British Open:**
Francesco Molinari claimed the Claret Jug on Sunday, becoming the first Italian to win a major. He outlasted Tiger Woods, Jordan Spieth, Rory McIlroy and others to secure the prize. Read more at [BBC.](https://www.bbc.com/sport/golf/44918313)
Cheddar's Hope King gets into the latest.
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Markets opened slightly higher to kick off the final trading week of the year as investors continue to watch the Omicron variant in the U.S. Sean O'Hara, President, Pacer ETFs joined Cheddar's Opening Bell to discuss what drove early market activity.
Carlo and Baker kick off the weirdest week of the year with all the news you missed over the holiday weekend, including calls for the CDC to shorten its isolation window as Omicron sweeps through the country.
Former professional tennis player Patrick McEnroe joined Cheddar to discuss the troubling issues surrounding player Peng Shuai who appeared potentially to have been silenced following her social media post accusing former Vice-Premier Zhang Gaoli of sexual assault. Shuai's subsequent disappearance, reappearance, and apparent retraction of the accusation in an interview only added to worries. "When this happened, all of us in the tennis community were very concerned. And, by the way, another thing Peng said in this interview was that she doesn't speak very good English," McEnroe noted. "Well I can assure you, she speaks darn good English, 'cause I spoke to her on many occasions over the last 15 years."
Universities like UCLA, Yale, and Duke have announced they're implementing remote learning amid the COVID omicron variant surge, despite President Biden recommending that K-12 schools should continue in-person education. Jared C. Bass, senior director for Higher Education at American Progress, joined Cheddar to break down what institutions of higher education might be considering differently. "I think some universities are allowing periods of a bit of a respite to allow students to get testing and make sure when they do return back to campus that they're healthy," he noted.
The S&P closed at a record at the major markets ended Thursday's session higher for a third straight day. Adam Coons, Portfolio Manager at Winthrop Capital Management, joins Cheddar News' Closing Bell, where he discusses what has investors feeling jolly before Christmas, and gifts investors with winning buying opportunities entering 2022.
The Supreme Court will hear arguments on President Joe Biden's vaccine mandates for large companies and health care workers on January 7, 2022. The mandates will remain in place until then.
Carlo and Baker cover the heartening news on the Covid front ahead of the holiday, plus President Biden punting student loan repayments again, a new space telescope and Love, Hate, Ate: Christmas Eve Eve Edition!
This year's worldwide semiconductor shortage limited the supply of everything from new cars to smartphones; and now, many in the chip industry expect the shortage to continue deep into 2022, and maybe even 2023. Semiconductor senior research analyst for Robert W. Baird & Co., Tristan Gerra, joins Cheddar News' Closing Bell to discuss.
