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I'm Margaret Brennan in Washington

and today on Face the Nation,

a powerful show of support for Ukraine from top congressional Democrats as the

Biden administration pushes for tens of billions more in aid for that war-torn

country. We'll have the latest on the military maneuvers and diplomatic efforts in the war that's now entering its 10th week

the head of US Agency for International Development, Samantha Power,

and Virginia Democratic Senator Tim

McCain will both be here. Then the committee investigating the January 6th

attack on the Capitol is preparing for what they hope to be critical public hearings next month.

We'll hear from Illinois Republican Congressman Adam Kinzinger about what to expect.

And finally, a vaccine for the very youngest may be just weeks away.

We will talk with Dr. Paul Burton, the chief medical officer at Moderna.

Plus, we'll check in with Dr. Deborah Burks, the coronavirus response coordinator under President Trump.

Her new book is entitled Silent Invasion.

It's all just ahead on Face the nation. We awoke this morning to a stunning sight. House Speaker Nancy Pelosi being greeted

by Ukrainian President Volodemir Zelensky in the streets of Kieve. She and six

other Democrats made a surprise visit to the region to show support and discuss

the President's proposed additional $33 billion U.S. aid package to Ukraine.

We are here to say to you that we are with you till this fight is over.

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