Tonight, one of the top foreign policy officials in the country were moved after a giant

security breach. Mike Waltz out as national security advisor, comes after he and other top

administration officials, were on an encrypted chat discussing war plans while a reporter

was in the group, who's replacing him and why he will likely still have a job.

With summer travel season nearing, the stark warning from the head of the DOT of cracks in the system.

Just asked the flyers going to a major travel hub delayed five hours.

The business is big and small sweating out the trade war.

McDonald's with its biggest drops in U.S.

sales since COVID and why some businesses are opting to expand. Out in the streets, the

May Day protests over deep government cuts. We go to coal country where a program checking

miners' health has been gutted. The death toll rising from a nonstop barrage of spring storms.

The threat of severe thunderstorms again for 41 million.

The suspect just caught after a hit and run left children injured in a popular South Carolina beach town.

John Elway speaks out after a deadly accident that left his longtime agent and friend dead.

Just in, Music Mogul Diddy's News from Court and the rush to protect the seals of Block

Island, the mission that is as important as it is adorable.

This is NBC Nightly News with Lester Holt.

Good evening and welcome.

A major shake-up in the Trump administration today, not playing out quite as it may have first seemed.

President Trump indeed sidelining his national security advisor Mike Waltz, as was the Washington buzz earlier today.

But then came news from the president that

he will nominate Waltz to become U.S. ambassador to the United Nations and tapping Secretary

...