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

David Muir reports on the biggest headlines across America and around the world, wherever the story goes. Thank you for making “World News Tonight with David Muir” America’s most watched newscast. | ABC World News Tonight with David Muir

ON THIS DAY: David Brinkley and Peter Jennings report for ABC News on April 18, 1983, from Beirut, Lebanon, after a suicide bombing by Islamic extremists killed 63 people, including 17 Americans, at the U.S. Embassy. https://abcn.ws/2qGXvqu | ABC World News Tonight with David Muir