Jack's true love
I was thinking who was Jack's actual love, looking at it:
Teri - Yes she was his wife and the mother of his daughter (gotta give him props for putting up with her), but he managed to 'work with' Nina over the next couple of seasons for the greater good.
Audrey - One could argue she was and rightfully so, but he fulfilled his mission before avenging her death.
Renee - I personally think she was, after losing her, no-one was safe, ex president, Russian delegates, Russian president, he was on a bloody warpath