19 In like manner will the way be opened to the peace we long for, as St. Paul beautifully remarks in the passage where he joins the precept of prayer to holy desires for the peace and salvation of all men: "I desire, therefore, first of all, that supplications, prayers, intercessions and thanksgivings be made for all men; for kings and all that are in high station, that we may lead a quiet and peaceful life in all piety and chastity. For this is good and acceptable in the sight of God our Savior, who will have all men to be saved, and to come to the knowledge of truth" (I Tim . ii. 1-4). Let peace be implored for all men, but especially for those who in human society have the grave responsibilities of government; for how could they give peace to their peoples, if they have it not themselves? And it is prayer precisely, that, according to the Apostle, will bring the gift of peace; prayer that is addressed to the Heavenly Father who is the Father of all men; prayer that is the common expression of family feelings, of that great family which extends beyond the boundaries of any country and continent.
Source: Caritate Christi Compulsi (Vatican.va)