Peace on Earth

I'm confused as to when war became okay.  When peace became wrong.  Peace is not a liberal or radical idea.  Peace is what Jesus wants for us, not just in our personal lives, but in this world.  I don't understand why Christians have become so pro-war.  This disturbs me.  It makes me think that the Christian sub-culture has gotten so wrapped up in a political party that the ideas, the lines, have gotten blurred.  Our devotion is to Jesus.  To what He says.  

"Turn away from evil and do good,

Seek peace and pursue it."

Psalm 34:14

"If possible, as far as it depends on you, live in peace with all people."

Romans 12:18

"Blessed are the peacemakers, for they shall be called sons of God."

Matthew 5:9

Of course, there are numerous scriptures on peace, and I could go on, but I don't think I need to.  I would question those who disagree, or are offended by the idea of peace in this world. What is your motivation behind that belief system?  

I'm tired of this election.  I'm tired of the lies, the fighting, the name-calling.  I wish our political system was not so polarized; it has become ineffective and ugly.