The World Day of Peace has often been a time when popes make magisterial declarations relevant to the social doctrine of the Church. Paul VI and John Paul II have each year made important statements on the United Nations, human rights, women's rights, labour unions, economic development, the right to life, international diplomacy, peace in the Holy Land, globalization and terrorism.
Vatican Radio summary report for 2016 message here.
CNA report for 2016 message here.
POPE FRANCIS FOR THE CELEBRATION OF THE
XLIX WORLD DAY OF PEACE
Solemnity of the Immaculate Conception of the Blessed Virgin Mary
Opening of the Extraordinary Jubilee of Mercy