5 Things You Need to Know: From Ukraine to Corvette Sinkhole

<p>The news you care about from Brian Williams and the "Nightly News" team.</p>

A view of a sinkhole that opened up in the Skydome showroom, Wednesday, Feb. 12, 2014, at the National Corvette Museum in Bowling Green, Ky. Eight display cars were swallowed by the hole. (AP Photo/Michael Noble Jr)Michael Noble Jr / ASSOCIATED PRESS
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Five essential stories of the day, hand-selected by the "Nightly News" team, starting with the crisis in Ukraine.

The Asahi Shimbun

Ukraine Crisis Tests U.S.-Russia Relations

President Obama faces a defiant Vladimir Putin over the crisis in Ukraine. The stand-off will test the president’s foreign policy strategy.

Pool / Getty Images

Dramatic Testimony on Day 1 of Oscar Pistorius’ Trial

One of Pistorius’ neighbors said she heard a “blood-curdling” scream on the night the Olympian killed his girlfriend.

A view of a sinkhole that opened up in the Skydome showroom, Wednesday, Feb. 12, 2014, at the National Corvette Museum in Bowling Green, Ky. Eight display cars were swallowed by the hole. (AP Photo/Michael Noble Jr)Michael Noble Jr / ASSOCIATED PRESS

First Corvette Rescued from Sinkhole

One of the eight vintage corvettes that fell into a sinkhole has finally been extracted.

EDUARDO MUNOZ / Reuters

Kerry Kennedy on Drugged Driving Trial: ‘I Was Innocent’

Robert F. Kennedy’s daughter, Kerry Kennedy, speaks exclusively to NBC News about her trial and her opinions about the nation’s criminal justice system.

Ellen DeGeneres / AP

Brian’s Oscars Round-Up

It was a different kind of Academy Awards show this year, largely because of host Ellen DeGeneres.