Or else, Bell betrays Perseus and joins the CIA within their assault on Perseus' headquarters during the Solovetsky Islands, wherever they wipe out the transmitters needed to send the detonation signal. Later, Adler will take Bell out for a private dialogue, assuring them that their option to change towards Perseus https://youtu.be/8JWOoM942-E?si=UumOZy-4bMfnZOrO