CBS News is experiencing significant internal upheaval following a series of personnel changes at its flagship investigative program "60 Minutes," with veteran correspondent Lesley Stahl describing the situation as the "worst experience" of her career.

Stahl's comments came in response to what she characterized as a wave of firings that affected seven people, including members of the show's management team. The longtime correspondent, who has been with CBS since 1972 and "60 Minutes" since 1991, expressed distress over the departures.

The personnel changes have sparked allegations of political bias within the network. Scott Pelley, another veteran "60 Minutes" correspondent, has accused CBS News of exhibiting political bias following the firings, adding to tensions within the organization.

Critics have pointed to what they describe as a pattern of controversial editorial decisions at "60 Minutes" spanning multiple years. These controversies have included handling of stories involving political figures and questions about the program's editorial processes under various leadership structures.

The current turmoil at "60 Minutes" represents a significant moment for the program, which has been a cornerstone of CBS News programming for over five decades. The show has long been considered one of television's premier investigative journalism platforms, making the internal discord particularly notable for the broadcast journalism industry.