Pope Francis
Fratelli Tutti §259
Fratelli Tutti: On Fraternity and Social Friendship
259 It should be added that, with increased globalization, what might appear as an immediate or practical solution for one part of the world initiates a chain of violent and often latent effects that end up harming the entire planet and opening the way to new and worse wars in the future. In today’s world, there are no longer just isolated outbreaks of war in one country or another; instead, we are experiencing a “world war fought piecemeal”, since the destinies of countries are so closely interconnected on the global scene.
Source: Fratelli Tutti (Vatican.va)