The Situation Room with Wolf Blitzer
The Pentagon said Russia could invade Ukraine with little to no warning after another build up of its troops at the border. The U.S. is closing its embassy in Kyiv after growing concerns that an attack might happen this week.
Dr. Anthony Fauci joins to answer questions about the new delay in authorizing Covid-19 vaccines for younger children. Many parents are increasingly frustrated as their kids remain unprotected.
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