These are the headlines you Need 2 Know.

  • Cohen Testimony: President Trump’s former lawyer is expected to publicly accuse the president of criminal conduct while in office during an open Congressional hearing today. According to a draft of his testimony, Cohen will also say that the president knew his adviser was in communication with Wikileaks about releasing DNC emails during the campaign. Cohen is in the middle of a three-day gauntlet of testimony in front of lawmakers. Find a refresher on what got him to this point here.

  • Hanoi Summit: President Trump and Kim Jong-Un began their second summit in less than a year in the Vietnam capital, where they are meeting for a one-on-one dinner. There is pressure on the U.S. delegation during this meeting to get something tangible from the North Koreans on their steps to denuclearize. Read more here.

  • India-Pakistan: Pakistan says it shot down two Indian warplanes that entered its airspace and captured two pilots, in a major escalation of tensions between the two nuclear powers. Read more here.

  • Border Emergency Vote: Over a dozen House Republicans joined Democrats in voting to block President Trump’s border emergency declaration. The measure now heads to the Senate where, if it passes, will likely lead to the president’s first veto. Read more here.

  • Albright Apology: Former Secretary of State Madeleine Albright apologized publicly to Mitt Romney for mocking him when he called Russia the greatest political foe of the U.S. Albright said Romney was right to have said it during a 2012 debate, in which President Obama retorted: “The 1980s are now calling and they want their foreign policy back.” Read more here.

  • AT&T Time Warner: A federal appeals judge has ruled that AT&T’s acquisition of Time Warner (now WarnerMedia) can go forward. It’s a blow to the Justice Department, which had appealed a June ruling that it was legal. The merger is worth $85.4 billion. Read more here.

  • Sleep Study: New parents face up to six years of sleep deprivation, according to new research published in the journal Sleep. Scientists tracked the sleep of thousands of new moms and dads and found it to be at its lowest point three months after birth, with women getting less rest than men. Read more here.

  • Insta Star: Singer Ariana Grande is now Instagram’s most-followed woman, bumping Selena Gomez to number two — though it’s close. Each woman has more than 146 million followers. Instagram’s most followed person is soccer star Cristiano Ronaldo. Read more here.

  • Today Change: Jenna Bush Hager will replace Kathie Lee Gifford as co-host of the fourth hour of NBC’s TODAY show. Gifford said in December that she’d be leaving at the end of her contract in April. Hager will host alongside Hoda Kotb. Read more here.

  • Mummy Mystery: The severed head of an 800-year-old mummy was stolen from a church in Dublin, Ireland. The mummy, known as "The Crusader," wasn’t the only one vandalized: the head of a mummified nun was turned around and another mummy was turned on its side. The acts of vandalism forced the closure of the crypts. Read more here.

Cheddar's Hena Doba and Jill Wagner get into the latest.

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