Should I Help Dijkstra Kill Radovid?
In The Witcher 3, helping Dijkstra during the Reason of State quest really means letting him execute Roche, Ves, and Thaler after Radovid is assassinated. It is a good fit for players who want a strong, independent Northern Realms and an end to Radovid’s witch hunts, but it costs the lives of several long-standing allies and blocks the Ciri-as-Empress ending. If you value Roche, Temeria, or a Nilfgaardian victory, you should defend Roche instead.