National security voices across Washington are reeling Monday following reports that top Trump Administration officials mistakenly provided detailed military plans to the editor of the Atlantic Magazine in advance of its recent strikes against Houthi rebels in Yemen.

Jeffrey Goldberg, the magazine’s editor-in-chief, claims in a blockbuster article that National Security Advisor Michael Waltz invited him — seemingly by accident — into a private chat group on Signal, an encrypted messaging service, where Secretary of Defense Pete Hegseth posted “operational details of forthcoming strikes on Yemen, including information about targets, weapons the U.S. would be deploying, and attack sequencing.”

Publishing screenshots from the group chat, titled “Houthi PC small group,” Mr. Goldberg revealed how Messrs. Hegseth and Waltz, along with Vice President Vance and the director of the CIA, John Ratcliffe, openly discussed with “shocking recklessness” the plusses and minuses of taking military action against the Houthis after the rebel group vowed to start targeting American vessels traveling through the Bab-el-Mandeb to the Suez Canal, a critical maritime trade route.

For instance, a Signal account identified as “JD Vance” shared his concerns that the timing of the military strikes would be a “mistake.”