Signalgate: Houthi Strike Planning via Signal Group (Mar 2025)

Introduction

On 11 March 2025, National Security Advisor Mike Waltz inadvertently added Jeffrey Goldberg, editor-in-chief of The Atlantic, to a Signal group chat named "Houthi PC small group." The group included some of the most senior officials in the second Trump administration: Defense Secretary Pete Hegseth, Vice President JD Vance, Secretary of State Marco Rubio, Director of National Intelligence Tulsi Gabbard, senior White House adviser Stephen Miller, special envoy Steve Witkoff, and others.

Over the days that followed, the group was used to discuss and coordinate US military strikes on Houthi targets in Yemen. Goldberg, realising what had happened, observed the conversation. On 24 March 2025, The Atlantic published his account. Goldberg redacted what he described as the most sensitive operational details, but his account confirmed that Defense Secretary Hegseth had shared specific weapons packages and strike timings in the group chat approximately two hours before the strikes took place.

What Was Shared

Hegseth's messages, as reported by Goldberg and subsequently confirmed in broad outline by congressional testimony, included specific information about weapons systems to be used and the timing of planned strikes against Houthi targets. The messages were sent via Signal — an encrypted but commercially available messaging application — rather than through classified government communications systems. The use of Signal for this purpose raised immediate questions about compliance with Federal Records Act requirements and classification protocols.

Goldberg's published account included screenshots of some messages. The White House initially disputed that classified information had been shared, but subsequent reporting and congressional testimony established that the operational details Hegseth shared were at minimum sensitive and potentially classified under standard military planning protocols.

Congressional Response

The House Committee on Oversight and Accountability and the Senate Intelligence Committee both opened inquiries. Hearings in April and May 2025 featured testimony from officials including Hegseth and Waltz. The committees examined whether classified information had been transmitted on an unsecured platform, whether Federal Records Act requirements had been violated by conducting official business on a commercial app, and whether security protocols had been followed in the composition of the group.

The testimony established that the addition of Goldberg to the group was accidental — Waltz stated he had intended to add a different contact — and that officials had not known a journalist was present until after Goldberg's article was published.

Waltz Reassignment

Mike Waltz was removed as National Security Advisor and reassigned to serve as the US Ambassador to the United Nations, a move widely interpreted as a consequence of the Signal incident. The reassignment was announced in the weeks following the publication of Goldberg's article and the onset of congressional scrutiny.

Why This Matters

The Signalgate incident is notable for several reasons beyond its immediate political consequences:

Operational security failure: Senior military and intelligence officials discussed active strike planning on a consumer messaging app, creating a record of operational details outside secure government systems and inadvertently including a journalist.

Classification questions: The distinction between "not formally classified" and "operationally sensitive" matters significantly in military planning contexts. Hegseth's disclosure of strike timings and weapons two hours before attacks raises questions about what adversaries might have done with such information had it been intercepted.

Accountability questions: The congressional hearings established that the incident occurred but did not produce formal sanctions against any official as of mid-2025.

Verdict

Confirmed. The Signal group existed, Goldberg was accidentally added, Hegseth shared operational details of Yemen strikes, and Waltz was reassigned following the disclosure. All core facts were confirmed by administration officials in congressional testimony. The incident is not a conspiracy theory — it is a documented government security failure that became public through journalism.

What Would Further Modify Our Assessment

• Inspector General or DOJ findings on whether classified information was transmitted and whether criminal statutes were violated
• Full declassification of the Signal exchange showing the complete content of the group's communications
• Findings on whether foreign intelligence services accessed Signal metadata or content during the relevant period

The Second Signal Chat: "Defense | Team Huddle"

The Goldberg episode was not the only Signal group in which Hegseth discussed the Yemen operation. In late April 2025, reporting revealed a second chat that Hegseth had created on his personal phone during his confirmation process, later titled "Defense | Team Huddle." Unlike the "Houthi PC small group," this thread was not composed of national-security principals. Its members included Hegseth's wife, Jennifer Hegseth, who does not work for the Defense Department; his brother, Phil Hegseth, a senior adviser at the Department of Homeland Security detailed to the Pentagon; and his personal attorney, Tim Parlatore, a Navy reservist assigned to Hegseth's office. According to officials cited in the reporting, Hegseth shared flight schedules for the F/A-18 Hornets involved in the pending attack on Houthi positions. For many analysts this disclosure was more alarming than the first: the operational detail was essentially the same, but the audience now included a family member with no security clearance and no official role.

The Pentagon Inspector General's Verdict (December 2025)

The Department of Defense Inspector General closed its more than eight-month investigation and released its findings in early December 2025 (document DODIG-2026-021). The report reached conclusions the White House had spent months resisting. It found that the information Hegseth transmitted matched operational details classified by U.S. Central Command as SECRET/NOFORN — a marking that bars dissemination to foreign nationals and allies — and that sharing the quantity and strike times of manned U.S. aircraft over hostile territory roughly two to four hours before the strikes "created a risk to operational security that could have resulted in failed U.S. mission objectives" and potential harm to U.S. pilots. The report noted that an adversary who obtained the data could have enabled Houthi forces to counter U.S. aircraft or reposition assets. It separately found that Hegseth violated Pentagon policy by conducting official business on a personal phone and by failing to retain records of the communications. Notably, Hegseth declined to be interviewed and did not provide his personal phone for examination.

The TeleMessage Archiving Fiasco

Signalgate also exposed a downstream security failure. To satisfy federal record-keeping obligations while continuing to use Signal, officials turned to TeleMessage, an Israeli-built Signal clone (from the firm Smarsh) that archives messages. Mike Waltz was photographed at a May 2025 cabinet meeting with TeleMessage open on his phone. Within days a hacker exploited a vulnerability in the platform, extracting message contents, contact details, and backend login credentials tied to government and corporate customers. On 7 May 2025 the company announced it had "temporarily suspended" all services "out of an abundance of caution." Security researchers noted the archiving app had never been evaluated by the National Archives and had not been approved under the government's FedRAMP program — meaning the very tool meant to make Signal use compliant was itself an unvetted liability.

The Denials and the Declassification Question

Administration officials mounted a consistent defense. Pentagon spokesman Sean Parnell insisted "there was no classified information in any Signal chat," and CIA Director John Ratcliffe testified under oath that his own messages were "entirely permissible and lawful" and that Signal use at the CIA predated the Trump administration and had records-management approval. The IG report complicated rather than resolved this dispute: it acknowledged that Hegseth possessed declassification authority over the material, but found he never notified recipients or U.S. Central Command that anything had been declassified, and that his handling violated protocols designed to protect service members regardless of formal classification status. In short, the debate shifted from "was it classified?" to "did following the rules matter?" — and the watchdog concluded it did.