Tonight, the U.S. puts more than 8,000 troops on heightened alert for possible deployment to

Eastern Europe as tensions with Russia intensify. President Biden meets with our European allies

as the U.S. and NATO send military might into the region in hopes of stopping Vladimir Putin

from entering Ukraine. A wild day on Wall Street.

The stunning comeback after the Dow dropped 1,000 points.

The school mask debate.

School boards sue Virginia's new governor over his mask optional order.

But in Los Angeles, students are told to upgrade their masks. Tonight,

parents react. Breaking news, three firefighters killed in Baltimore after a row home collapses

and traps them inside. I can't breathe. The federal trial begins for three former police officers accused of ignoring

George Floyd's pleas for help. End of affirmative action. The conservative dominated Supreme

Court will decide whether race-based admission to universities like Harvard is lawful. Deadly gun violence

surges.

Multiple police officers shot and killed as homicides spike nationwide.

Gas price warning, while your next trip to the pump may cost even more.

And making history on the high seas as the first woman takes command of the USS Constitution.

This is the CBS Evening News with Nora O'Don, reporting from the nation's capital.

Good evening, and thank you for joining us.

There is a lot of news to get to on this Monday night, but we're going to begin with rising

tensions in Ukraine

and the threat of a possible Russian invasion growing by the minute.

Here in Washington, President Biden held a video call with European allies this afternoon

...