Signal Use by Defense Secretary Sparks Pentagon Scrutiny
IG launched a 3-month probe in April to assess improper operational plan discussions and classification compliance.
Signal chat included timestamps and military platform names revealing detailed strike plans.
IG concluded Hegseth should not have used Signal and urged better training for officials.
Hegseth refused an IG interview and submitted a written account, leaving repercussions unclear.
Unredacted report and Adm. Mitch Bradley's testimony will be released Thursday.
1 month ago