On this "Face the Nation" broadcast, moderated by Margaret Brennan: Sen. J.D.

Vance , Republican of Ohio Sen. Gary Peters , Democrat of Michigan Oksana Markarova , Ukrainian ambassador to the U.S.

Chris Krebs , the former director of CISA and a CBS News cybersecurity expert and analyst Former Defense Secretary Robert Gates Click here to browse full transcripts of "Face the Nation." MARGARET BRENNAN: I'm Margaret Brennan in Washington. And this week on Face the Nation: From the courtroom to the campaign trail, election 2024 is in full swing.

Crisscrossing key states, former President Trump and President Biden spent the weekend rallying crucial voting groups just about one month before they have agreed to face off in the first presidential debate of 2024. But will it be enough to turn out voters? We will talk to Ohio Senator J.D.

Vance, a possible running mate for Mr. Trump and one of the Republicans who showed up to support the former president in New York, where he faces charges of falsifying business records to pay off an adult film star to benefit his 2016 campaign. And we will hear from Michigan Senator Gary Peters, who's in charge of defending Democrats' slim majority.

Plus: new threats to our elections. What do we need to know about foreign interference and the dangers of A.I.

? We will get the latest from cybersecurity expert and analyst Chris Krebs. Then: Russia's advance on Ukraine's second largest city of Kharkiv marks one of Moscow's biggest territorial gains to date.