New details emerge in the manhunt for insurance CEO's killer; Notre Dame Cathedral reopens in Paris five years after fire; Kristen Welker's exclusive interview with President-elect Donald Trump; and more on tonight's broadcast.

'Strong person of interest' arrested in killing of UnitedHealthcare CEO; After Assad is driven out of Syria, celebrations and searches for the missing; Daniel Penny acquitted in subway chokehold death; and more on tonight's broadcast.