The Biden administration has ratcheted up its support to Ukraine, with shipments of weapons, ammunition, body armor, and other equipment to defend against Russia's onslaught. But is it enough to support Ukrainian forces fighting for their nation's existence? CBS News national security correspondent David Martin talks with leading military experts who discuss American aid so far, and whether a 21st century Berlin Airlift will be needed.

"CBS Sunday Morning" features stories on the arts, music, nature, entertainment, sports, history, science and Americana, and highlights unique human accomplishments and achievements. Check local listings for CBS Sunday Morning broadcast times.

Subscribe to the "CBS Sunday Morning" YouTube channel: http://bit.ly/20gXwJT
Get more of "CBS Sunday Morning": http://cbsn.ws/1PlMmAz
Follow "CBS Sunday Morning" on Instagram: http://bit.ly/23XunIh
Like "CBS Sunday Morning" on Facebook: https://bit.ly/3sRgLPG
Follow "CBS Sunday Morning" on Twitter: http://bit.ly/1RquoQb
Subscribe to our newsletter: http://cbsn.ws/1RqHw7T
Download the CBS News app: http://cbsn.ws/1Xb1WC8
Try Paramount+ free: https://bit.ly/2OiW1kZ

For video licensing inquiries, contact: licensing@veritone.com