Tonight, hours before that major summit, the president's warning to Vladimir Putin.

President Trump warning of severe consequences if Russia doesn't end the war in Ukraine.

As world leaders meet, President Zelensky, warning Putin is bluffing.

As Russia intensifies its assaults, are Richard Engel on the ground in Ukraine tonight.

Also, Chattanooga recovering from flash flooding, three feet of water drowning areas.

Rescuers loading people into rafts in the dark as a man helped save a driver stuck in water up to his neck.

Now the new round hitting the northeast and the flood emergency in Alaska.

Entertainer-in-chief President Trump taking over the Kennedy Center honors, announcing

he's hosting, and that he personally selected this year's honorees, including Kiss,

Gloria Gaynor, and Sylvester Stallone.

The rash of armored truck heist, robbers carrying AR-15s,

going directly for bags of cash. In one case, stealing more than $2 million. Are they all connected?

We take you inside underground cartel tunnels, big enough to traffic drugs and people,

the crackdown, and the exclusive video we obtained,

showing a possible human trafficking operation.

The young aviators stranded in Antarctica after a flight into history ended in an icy detour.

This is NBC Nightly News with Tom Yamas.

And good evening.

Tonight the countdown is on for that high-stake summit in Anchorage, Alaska,

between President Trump and Russian leader, Vladimir Putin,

ahead of talks to end the three-year Russian invasion.

Putin's army still pummeling Ukraine's front lines.

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