There is no peace or happiness in our worldy life. Circumstances create turmoil and annoyance.
When we understand our relationship with God then we all will be happy. It is an essential factor for establishing peace in the world.
Peace comes when we stop being the controllers.
Peace is a side effect of love. So, if there is love, peace would automatically be there.
As long as we identify ourselves only as a product of this material existence, there can be no real peace.