For Orthodox Christians, peace is very much related to the notion of justice and freedom that God has granted to all human beings through Christ and the work of the Holy Spirit.
Peace is also a daily endeavor. We need to be courageous and make the effort to work towards reconciliation. For Christians and all humanity, the peacemaker is guided and moved by love. Love thy neighbor is central to Christian teaching, taking the form of service to the poor and the marginalized.
Peace I leave with you; my peace I give you. I do not give to you as the world gives. Do not let your hearts be troubled and do not be afraid. John 12:27