Updated at 2:38 p.m. ET

President-elect Joe Biden stressed a return to multilateralism Tuesday as he introduced key national security and foreign policy appointees and nominees for his incoming White House Cabinet, moving forward with the traditional transition process even though President Trump still hasn't formally admitted defeat.

At an orphanage in Mosul, Iraq, the woman and the girl sitting on the long, gray sofa communicate mostly through touch — the girl leans against the woman, playing with her blue bead bracelet. The woman smiles as she removes the bracelet and puts it on the child's own slender wrist.

Tesla's skyrocketing share prices have made Elon Musk the world's second-richest person, with a net worth of nearly $128 billion, according to the Bloomberg Billionaires Index.

Musk edged past Bill Gates on Tuesday. Only Amazon founder Jeff Bezos is worth more.

The parents of Harry Dunn have lost their case before the U.K.'s high court, which ruled that the U.S. driver who police say fatally struck their son did have diplomatic immunity.

Dunn, 19, was riding his motorbike last August when he was hit by a car being driven on the wrong side of the road by Anne Sacoolas, the wife of a U.S. diplomat, as she left a nearby air force base used by the U.S. military.

In Ethiopia, health clinics for teenagers once supported by U.S. foreign aid closed down. In Kenya, a decades-long effort to integrate HIV testing and family planning unraveled. And in Nepal, intrepid government workers who once traversed the Himalayas to spread information about reproductive health were halted.

As coronavirus cases continue to surge both in the U.S. and around the world, there's promising news on the vaccine front.

It was Memorial Day when then-candidate Joe Biden made his first public appearance since the coronavirus shut down in-person campaigning. Before he went out to place a wreath at a veterans memorial in Delaware, Biden and his team decided he would wear a mask. It wasn't a difficult decision, an aide said when asked about the choice.

The Recording Academy announced its 2021 Grammy nominations on Tuesday, with Beyonce, rising pop star Dua Lipa and stoner superstar Post Malone leading a diffuse field.

Beyonce features on two songs in the record of the year category, which essentially rewards the year's best single: the remix of Megan Thee Stallion's "Savage" and her own "Black Parade." The latter was also nominated for song of the year, which is awarded to the winner's songwriters.

After a three-year pause, Twitter is going to let you ask for those little blue check marks again.

The company said Tuesday it will start reviewing applications in 2021 under newly released guidelines.

The blue check, which means Twitter has verified a user's identity, is seen as a status symbol on the platform but the process by which the checks were issued has long been murky and inconsistent.

A lot will be missing about Thanksgiving this year. It's a holiday that's celebrated on a bedrock of bringing family and friends, near and far, together for a big meal and lots of catching up, but the Centers for Disease Control and Prevention urges: "As cases continue to increase rapidly across the United States, the safest way to celebrate Thanksgiving is to celebrate at home with people you live with."

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