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KNOW IT ALL: Monday's Top Stories at NBC News

<p>From the Broncos and Seahawks clinching Super Bowl spots to increased threats of attacks at the upcoming Olympics, see the top stories we're following.</p>
Image: Richard Sherman
Seattle Seahawks' Richard Sherman holds up the George Halas Trophy after the NFL football NFC Championship game against the San Francisco 49ers on Sunday.Elaine Thompson / AP

Good morning, happy Monday — and happy Martin Luther King, Jr. Day. Here are six of the top stories we are following this morning at NBC News:

1. Next stop for Denver Broncos, Seattle Seahawks is Super Bowl XVLII

Peyton Manning led the Broncos to a 26-16 victory over the Patriots in the AFC, while the Seahawks claimed the NFC title, taking down the 49ers in a 23-17 nail biter. The winners will face off Feb. 2 at MetLife Stadium in New Jersey. Read more in SPORTS.

But postgame, it was Seahawks cornerback Richard Sherman who grabbed the spotlight in a ranting TV interview that showed him every bit the sore winner. He responded:

2. New video shows two men claiming responsibility for deadly Russia bombings

Suicide bombers killed 33 people in the city of Volgograd in two attacks last December. Now, men with the Islamist organization Anars Al Sunna are warning of more attacks during the Winter Olympics in Sochi. Read more in NEWS.

3. More accusations surface of Chris Christie's shake-down politics

Hoboken Mayor Dawn Zimmer first told MSNBC that the N.J. governor’s administration said it would only provide her city with more Superstorm Sandy relief funds if she supported a private development project. Christie’s allies, including former New York Mayor Rudy Giuliani, say Zimmer is the latest to “pile on” the governor. Read more in POLITICS.

4. New winter blast set to freeze U.S. all over again

Bundle up. Forecasts show temperatures will plunge about 10 to 25 degrees below average Tuesday through Thursday through the Plains, Midwest and Northeast. Snowfall is also expected in some regions. Read more in NEWS.

Image: A pedestrian walks through the falling snow in Medford
A pedestrian walks through the falling snow in Medford, Mass., on Jan. 18, 2014.Brian Snyder / Reuters

5. American missionary imprisoned in North Korea holds news conference

Kenneth Bae, who’s been jailed in the rogue nation for more than a year, was allowed to appear before reporters Monday and plead for help. He said he has not been treated badly and hoped the U.S. can work with North Korea to attain his freedom. Read more in NEWS.

6. NBC’s late night lineup gets jolt from Jimmy Fallon and Seth Meyers

Fallon, speaking at the Television Critics Association press tour on Sunday, said he’s tweaking the “Tonight Show” name slightly when he takes over Feb. 17. Meyers, meanwhile, will replace Fallon on “Late Night” the following week. Read more in POP CULTURE.