The Atlantic’s editor-in-chief, Jeffrey Goldberg, reported he accidentally received top secret war plans from Defense Secretary Pete Hegseth, after he was included in a group chat on the encrypted messaging platform “Signal.” MSNBC’s Michael Steele reports and is joined by Larry Pfeiffer, former senior director of The White House under President Obama. (The Beat's YouTube playlist: msnbc.com/ari Ari: / arimelber Beat merch: msnbc.com/Beat5) For more context and news coverage of the most important stories of our day click here: msnbc.com » Subscribe to MSNBC: youtube.com/msnbc » Subscribe to MSNBC on TikTok tiktok.com/@msnbc » Subscribe to MSNBC on Instagram instagram.com/msnbc Download our new MSNBC app for the latest breaking news and daily headlines at a glance: msnbc.com/information/download-msnbc-app-n1241692 Follow MSNBC Show Blogs MaddowBlog: msnbc.com/maddowblog MSNBC delivers breaking ne...