Almost nothing matters more to a Klingon than their honor, and that means they will sometimes make decisions that seem baffling to those from other cultures. In the season 3 "Star Trek: Strange New Worlds" episode "Shuttle to Kenfori,

Strange New Worlds season 3 resolves an open question from season 2 regarding Dr. M'Benga assassinating a Klingon Ambassador.

Obviously the showrunners and writing staff have the official say on the matter, but if Babs Olusanmokun feels his character's confession to Dak'Rah's daughter Bytha was a truthful one, then that's good enough for me. For anyone who needs a refresher on the details what he said, let's revisit that.