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Ambassador Tina Kaidanow. Photo: Jim Watson/AFP via Getty Images

Ambassador Tina Kaidanow, senior adviser for international cooperation, has left the Pentagon, the Department of Defense confirmed to Defense News Wednesday.

Why it matters: She's the fifth top official in seven days to exit or announce their departure from the Pentagon, according to Defense News and The Hill.

The big picture: Per the two news outlets, Kaidanow left her role on Dec. 16. It was announced on Dec. 12 that Randall Schriver, the top Asia policy official, would leave his position soon. A day later, Jimmy Stewart, the acting undersecretary of defense for personnel and readiness, said he was retiring.

  • Steven Walker, head of the Defense Advanced Research Projects Agency, will leave in January "for an industry job," Defense News reported Tuesday.
  • Earlier Wednesday, the Defense Department confirmed to the military news outlet that Kari Bingen, principal deputy undersecretary of defense for intelligence, would step down next month.

What they're saying: A Department of Defense spokesperson told The Hill the service of long-time official Kaidanow was appreciated and he wishes her well.

  • DOD spokesperson Lt. Col. Michael Andrews told Defense News the department was "committed to the development and implementation of international cooperative programs and defense exportability efforts to foster cooperation with U.S. allies on research, development, production and support of weapons systems and related equipment."
  • "The department will not provide anything further on this personnel matter," Andrews added.

Go deeper: Every high-profile Trump administration departure

Go deeper

52 mins ago - Politics & Policy

Stalemate over filibuster freezes Congress

Illustration: Sarah Grillo/Axios

Senate Majority Leader Chuck Schumer and Mitch McConnell's inability to quickly strike a deal on a power-sharing agreement in the new 50-50 Congress is slowing down everything from the confirmation of President Biden's nominees to Donald Trump's impeachment trial.

Why it matters: Whatever final stance Schumer takes on the stalemate, which largely comes down to Democrats wanting to use the legislative filibuster as leverage over Republicans, will be a signal of the level of hardball we should expect Democrats to play with Republicans in the new Senate.

Dave Lawler, author of World
1 hour ago - World

Biden opts for five-year extension of New START nuclear treaty with Russia

Putin at a military parade. Photo: Valya Egorshin/NurPhoto via Getty

President Biden will seek a five-year extension of the New START nuclear arms control pact with Russia before it expires on Feb. 5, senior officials told the Washington Post.

Why it matters: The 2010 treaty is the last remaining constraint on the arsenals of the world's two nuclear superpowers, limiting the number of deployed nuclear warheads and the bombers, missiles and submarines which can deliver them.

Updated 2 hours ago - Technology

Facebook refers Trump ban to independent Oversight Board for review

Photo: Alex Edelman/AFP via Getty Images

Facebook's independent Oversight Board has accepted a referral from the platform to review its decision to indefinitely suspend former President Trump.

Why it matters: While Trump critics largely praised the company's decision to remove the then-president's account for potential incitement of violence, many world leaders and free speech advocates pushed back on the decision, arguing it sets a dangerous precedent for free speech moving forward.

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