The star witness of the federal sex trafficking trial of the music mogul Sean Combs is expected to take the stand on Tuesday: his former girlfriend Casandra Ventura, the singer known as Cassie, who f...

The BBC's Senior North America Correspondent John Sudworth lays out the key points in Cassie's testimony.

Daniel Phillip, a male escort, testified Monday that he witnessed the rapper grab ex-girlfriend Cassie Ventura by the hair following one meet-up.