Peace is not the outcome of co-existence

co-existence is the outcome Peace

individual peace is the unit of world peace---maharishi

peaceful individuals make a peaceful community

peaceful communities make a peaceful state

peaceful states make a peaceful nation

peaceful nations make a peaceful world

in which coexistence is possible, 

all living together, 

working together,

prospering together

without the possibilities for any conflicts and negative tendencies

individual peace and thereby, the world peace is the only way for 

co-existence and hence is way of existence on this planet. 

There is simply no other option.