NBC: Top Stories

• TikTok says it will go dark on Jan. 19 unless given 'definitive' assurances

  TikTok confirmed that it plans to go dark on January 19 unless the company is given more clarity from the Biden Administration and Department of Justice regarding the ban that is scheduled to go into effect. 

• Israel's cabinet approves ceasefire and hostage release agreement

  The full Israeli cabinet approved the Gaza ceasefire and hostage release agreement expected to take effect on Sunday. Hamas is expected to release just three of its hostages on Sunday, while others are supposed to be freed in the coming weeks. The deal is also supposed to clear the way for more supplies for the people of Gaza. NBC News' Richard Engel has reaction from families in Israel and Gaza.

• Trump's inauguration will be held indoors due to frigid weather forecast

  President-elect Donald Trump's inauguration ceremony is moving indoors to the Capitol rotunda because of a frigid weather forecast in the nation's capital Monday, the president-elect announced on social media Friday.

• Elon Musk riles up a new corner of the internet: Gamers

  Elon Musk is battling critics on the internet, again.

• As bird flu concerns grow, scientists race to develop new vaccines

  As fears grow of a possible bird flu pandemic in humans, the federal government is pouring more money into the development of new vaccines, including an mRNA shot.