To build a bridge you have to own both both sides of the river. Otherwise, you have a pier.
Christians are called to Preach, to teach and to testify of the Gospel of Jesus Christ. It is Christ who Heals and brings Peace.
The Scriptures tell us that there is no Fellowship between Light and Darkness ; that two cannot walk together unless they Agree.
What the world tries to do through `peace` efforts is to gain by Compromise what could not be gained by force. It strives for cease-fires. That is not real Peace.
Back to the bridge analogy...
If both sides of the river (people, nations, races, etc). are owned by the same person ( Christ Jesus ) bridges can be built ( Unity of the Holy Spirit ).
I really do wish the Pope would act like a Christian and Preach the Gospel. It is a waste of his position and resources to act and talk just like any other Secular Humanist , Globalist Politician.