Pentagon spokesman John Kirby told NBC News there was "no reason to doubt the authenticity" of the clip purporting to show US soldier Sergeant Bowe Bergdahl, who has spent five years in Taliban captivity, being handed back into US custody.
He said: "US officials are currently reviewing the video, but our focus right now is in getting Bergdahl the care he needs."
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The family said that there will "always be a welcome in Wales" for the former intelligence analyst and whistleblower.
British tennis player Dan Evans has caused a shock by beating No.7 seed Marin Cilic in four sets at the Australian Open.
Drivers' union ASLEF suspended industrial action scheduled for next week but the RMT Conductors' union strike remains in place.