Tonight, law enforcement preparing for the possible arrest of Donald Trump, as the former president calls on his supporters to protest.

And intelligence officials see an increase in threats. Here are tonight's top headlines.

A ring of steel around the Manhattan District Attorney's Office where a grand jury hears what could be the final witness in a campaign finance case against Trump.

Tonight, his Republican rivals react.

I don't know what goes into paying hush money to a porn star.

The leaders of China and Russia shook hands at the Kremlin Monday.

She is the first world leader to meet with Vladimir Putin since the International

Criminal Court issued an arrest warrant or led to war crimes.

Spring break chaos and violence leads to a curfew in Miami Beach.

The volume of people in our city has created a peril that cannot go unchecked.

One student is killed after a shooting at a Texas high school.

We do believe that we have the one shooter detained.

Important information for parents after a Gerber baby formula recall, what you need to know.

Turner drives a bottle of left center field.

Back it goes.

It's gone again.

Six, four, three.

And Team USA heads to the championship.

Good evening, and thank you for joining us on this first day of spring.

Tonight, we've got more of our 60 minutes exclusive reporting as the U.S. Navy's

chief naval officer accuses China of trying to bully others. Plus, we talk to top gun officers

and fighter pilots on how this conflict is different. Plus, our new series facing fertility

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