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U.S. Deputy Energy Secretary Dan Brouillette. Photo: Odd Andersen/AFP/Getty Images

President Trump intends to nominate Deputy Energy Secretary Dan Brouillette to replace outgoing Energy Secretary Rick Perry, who turned in a resignation letter amid his connection to the Ukraine debacle.

The state of play: Perry plans on leaving his post by the end of the year, according to the president's tweet on Friday. Brouillette has a lower profile than Perry but supports the same basic agenda, including nuclear power and exports of liquefied natural gas, per Axios' Amy Harder.

What Trump tweeted:

"I want to thank Secretary of Energy Rick Perry for the outstanding job he has done. He will be leaving at the end of the year to pursue other interests. Rick was a great Governor of Texas and a great Secretary of Energy.
"He is also my friend! At the same time, I am pleased to nominate Deputy Secretary Dan Brouillette to be the new Secretary of Energy. Dan’s experience in the sector is unparalleled. A total professional, I have no doubt that Dan will do a great job!"

The bottom line: The nomination will be made when the White House formally submits Brouillette's name to the Senate for consideration.

Go deeper: Energy Secretary Rick Perry offers Trump his resignation

Go deeper

Biden Cabinet confirmation schedule: When to watch hearings

Joe Biden and Kamala Harris on Jan. 16 in Wilmington, Delaware. Photo: Angela Weiss/AFP via Getty Images

The first hearings for President-elect Joe Biden's Cabinet nominations begin on Tuesday, with testimony from his picks to lead the departments of State, Homeland and Defense.

Why it matters: It's been a slow start for a process that usually takes place days or weeks earlier for incoming presidents. The first slate of nominees will appear on Tuesday before a Republican-controlled Senate, but that will change once the new Democratic senators-elect from Georgia are sworn in.

Kamala Harris resigns from Senate seat ahead of inauguration

Vice President-elect Kamala Harris. Photo: Mason Trinca/Getty Images

Vice President-elect Kamala Harris submitted her resignation from her seat in the U.S. Senate on Monday, two days before she will be sworn into her new role.

What's next: California Gov. Gavin Newsom has selected California Secretary of State Alex Padilla to serve out the rest of Harris' term, which ends in 2022.

3 hours ago - World

Putin foe Navalny to be detained for 30 days after returning to Moscow

Russian opposition leader Alexey Navalny. Photo: Oleg Nikishin/Epsilon/Getty Images

Russian opposition leader Alexey Navalny has been ordered to remain in pre-trial detention for 30 days, following his arrest upon returning to Russia on Sunday for the first time since a failed assassination attempt last year.

Why it matters: The detention of Navalny, an anti-corruption activist and the most prominent domestic critic of Russian President Vladimir Putin, has already set off a chorus of condemnations from leaders in Europe and the U.S.