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Grill tiktok ceo of allegation that the app threatens nationa security and you today nbc news can exclusively repor tiktok now has 150 million active users in the u.s. that is according to the ceo from her testimony joining me now, nbc's alli raffa from wilmington delaware where the president spending his weekend. ali, welcome i know the white house wants t take its own action on tiktok. what are you hearing >> alex, this is probably th only issue you revel see president biden and former president trump agree on the safety and security of americans when it comes to tiktok so this week the bide...

About what kim is going to agree to or not. and whether the u.s. is going to hold the line on denuclearization. everything i'm hearing is, they want to define success as getting kim to give up his nuclear weapons. and that to succeed economic success in vietnam with singapore at the summit. >> tucker: that is a big ask to go into this. what are they threatening if they don't get it? >> bret: well, that is it. what does success look like and what is failure look like. success looks like incrementally may be getting inspectors a verifiable system employees. getting a timeline when things actuall...