Journalist Jeffrey Goldberg is accusing Mike Waltz of lying about talking with him — ridiculing on Sunday the claim that his phone number was mysteriously “sucked into” the national security adviser’s cellphone before being included in a Signal group chat about Yemen airstrikes.

Screenshots shared by Goldberg show Waltz added the journalist to the Signal chat about an upcoming attack on the Houthi rebels in Yemen, but Waltz has repeatedly said he had neve

Mr. Goldberg, who was included on a private text thread discussing war plans, was a longtime national security reporter who became editor of The Atlantic in 2016.