Sean "Diddy" Combs' sex trafficking trial began with the Cassie Tape being played, testimony from a male exotic dancer and opening statements.

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

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...