"There cannot be peace just because we want peace:"there SHOULD be peace because I am agitating for it". This does not happen. We cannot agitate for peace. When we become agitated we lose our peacefulness. Let there be no agitation. Purify your mind. Then every action you take will add peace to the universe.
Work for your own peace, and you will find that you have started helping the atmosphere around you to become more peaceful."