Question: How do you convince or coerce a person to be peaceful?
Answer: Stop trying.
It is impossible to convince or coerce an individual to be "more" peaceful. In order to begin the individual peace process, one must be awakened to the personal advantage that peace offers.
Our world now offers the technology processes and methodologies to advance the individual and community with greater choices of cognitive conflict resolution systems, yet the individual must travel the disciplined path of moment-to-moment awareness before s/he can step into a position of peace leadership.