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

TONIGHT: David Muir anchors a special 1-hour edition of ABC World News Tonight with David Muir live from Las Vegas in the wake of the nation's deadliest mass shooting. Follow ABC News for the latest developments. http://abcn.ws/2xVfcqU | ABC World News Tonight with David Muir

TONIGHT: David Muir anchors ABC News coverage from Beauregard, Alabama, where at least 23 people where killed by one of 40 reported tornadoes to strike the Southeast in the past 24 hours. https://abcn.ws/2NILURW | ABC World News Tonight with David Muir

ON THIS DAY: Peter Jennings anchors ABC News coverage on April 9, 2003, when jubilant Iraqis toppled a statue of Saddam Hussein, celebrating the fall of his regime and embracing Americans troops as liberators. https://abcn.ws/2H6Vk9c | ABC World News Tonight with David Muir

32 years ago yesterday, a massive earthquake hit western Mexico, killing thousands and badly damaging the city http://abcn.ws/2yeknyP | ABC News

Elon Musk has released a bloopers video showing “how NOT to land an orbital rocket booster”. More here: http://ab.co/2wtuD5m | ABC News