Jon Karl reports on former Rep. Matt Gaetz announcing his withdrawal from President-elect Trump's attorney general nomination amid sexual misconduct allegations; Ian Pannell has details on the experimental ballistic missile Russia launched, targeting a major Ukrainian city; Stephanie Ramos has the latest on what police say about the location of Wisconsin father of three Ryan Borgwardt, who's accused of faking his death while kayaking and fleeing overseas; and more on tonight's broadcast of World News Tonight with David Muir.