A Thomistic Catechesis On War: 4 Lists from Aquinas
"True religion looks upon as peaceful those wars that are waged not for motives of aggrandizement, or cruelty, but with the object of securing peace, of punishing evil-doers, and of uplifting the good."
“Thou Shall Not Kill” and War: 16 Teachings of the Catholic Church
However, "as long as the danger of war persists and there is no international authority with the necessary competence and power, governments cannot be denied the right of lawful self-defense, once all peace efforts have failed."
Holy War: 6 Thoughts On Whether One Can Fight On A Holy Day
"Whosoever shall come up against us to fight on the Sabbath-day, we will fight against him."
Tactics: 6 Thoughts on Whether It Is Lawful to Lay Ambushes in War
"Now we are not always bound to do this, since even in the Sacred Doctrine many things have to be concealed, especially from unbelievers, lest they deride it, according to Matthew 7:6: 'Give not that which is holy, to dogs.'
Clerics and War: 6 Thoughts On Whether It Is Lawful for a Priest to Fight
Wherefore it is unbecoming for them to slay or shed blood, and it is more fitting that they should be ready to shed their own blood for Christ, so as to imitate in deed what they portray in their ministry.
Catholics and War: 7 Thoughts from St. Thomas Aquinas
"True religion looks upon as peaceful those wars that are waged not for motives of aggrandizement, or cruelty, but with the object of securing peace, of punishing evil-doers, and of uplifting the good." - St. Augustine
