ABC World News Tonight with David Muir Full Broadcast - Sept. 18, 2026

Mary Bruce has details after Pres. Trump announced he is banning three major news outlets — CNN, MS NOW and Politico — from the White House, effective immediately; Aaron Katersky reports as the lone holdout juror in the Lindsay Clancy murder trial speaks out, saying he "didn't have any doubts" that Clancy knew what she was doing and planned the murder of her children; Morgan Norwood reports on the trial of Caleb Flynn, a former pastor and contestant on "American Idol," who is accused of fatally shooting his wife; and more on tonight’s broadcast of World News Tonight with David Muir. 00:00 Intro 1:58 Trump: CNN, MS NOW and Politico banned from White House 4:54 Holdout juror in Lindsay Clancy murder trial breaks silence 7:21 Former 'American Idol' contestant on trial after being accused of murdering wife 8:54 Princess Diana's brother defends claims in memoir about King Charles 10:54 Flash flooding threat on the move, set to reach Northeast on Sunday 11:45 PA Dept. of Health: Newborn babies may have been exposed to measles at Philadelphia children’s hospital 12:07 Warren Buffett steps down as chairman of Berkshire Hathaway 12:40 Pentagon releases 6th batch of declassified UFO files 13:00 Singer, composer Duncan Sheik dies at 56 13:19 National Geographic shares new images of newly identified cat species 13:45 Person of the Week: The 9|11 survivor and the call from a young man 20 years later ABC World News Tonight with David Muir delivers the news that matters most. Watch to get the latest news stories and headlines from around the world. Follow ABC World News Tonight on... Instagram: https://www.instagram.com/abcworldnewstonight/ TikTok: https://www.tiktok.com/@abcworldnews X (formerly Twitter): https://twitter.com/ABCWorldNews Facebook: https://www.facebook.com/WorldNewsTonight Threads: https://www.threads.net/@abcworldnewstonight ABC News is your trusted source for breaking news, analysis, exclusive interviews, headlines, and videos: https://abcnews.go.com/ Subscribe to ABC News on YouTube: https://bit.ly/2vZb6yP Watch full episodes on Hulu: http://abcn.ws/3bzvQQn #WorldNewsTonight #DavidMuir #News #ABCNews