TUESDAY NIGHT: David Muir anchors a special edition of ABC World News Tonight with David Muir as Iran launches an attack on U.S. military facilities in Iraq after a U.S. drone killed Qassem Soleimani, with Ian Pannell reporting from Erbil on the latest details, Martha Raddatz in Tehran where Iranians were vowing revenge and Jonathan Karl at the White House where President Trump is being briefed.https://abcn.ws/2QOryIY | ABC World News Tonight with David Muir

WATCH: David Muir anchors a special edition of ABC World News Tonight with David Muir live from Manchester, England after the deadly terror attack at the Ariana Grande concert. http://abcn.ws/2qgU5I6 | ABC World News Tonight with David Muir

REMEMBERING AN ICON: World News Tonight anchor Peter Jennings died on this day in 2005. He would have turned 80 this year. In 2015, David Muir highlights his memorable moments in broadcast and how his life changing legacy continues. #PersonoftheWeek https://abcn.ws/2OOjBBU | ABC World News Tonight with David Muir