You just need to look at what the gospel asks and what war
does. The Gospel asks that we feed the hungry, give drink
to the thirsty, clothe the naked, welcome the homeless, visit
the prisoner, and perform acts of mercy. War does all the
opposite. It makes my neighbor hungry, thirsty, homeless,
a prisoner and sick. The Gospel asks us to take up our cross.
War asks us to lay the cross on others.
Dorothy Day