ABC World News Tonight with David Muir Full Broadcast

Mary Bruce reports on the stunning collapse of an alliance between Pres. Trump and and Elon Musk that played out before the world after tensions mounted for days over the president’s megabill to fund his agenda; Martha Raddatz reports on Russia’s ferocious assault after Ukraine's stunning coordinated drone attack deep inside Russia; Aaron Katersky has details on the evidence that prosecutors in Luigi Mangione’s case say reveal a motive for ALLEGEDLY killing UnitedHealthcare CEO Brian Thompson months before his murder; and more on tonight’s broadcast of World News Tonight with David Muir.