The Church that built hospitals also blessed armies. The tradition that taught mercy also codified the duty of legitimate defence. This is not a contradiction. It is 1,600 years of careful moral reasoning — and it directly informs what we do here.
We are a Catholic-founded investment firm. Our name — Fides Polonia — means Polish Faith. Our office is in Kraków. We invest, among other things, in Poland's defence industry: the factories that make missiles, the companies that build attack helicopters, the suppliers that feed ammunition to the armies defending NATO's eastern flank. Some of our readers and prospective investors have asked, reasonably, whether this is a contradiction.
It is not. And the reason it is not requires no special pleading, no creative interpretation, and no departure from mainstream Catholic moral teaching. The reason is that the Catholic Church has had a fully developed, explicitly articulated doctrine on the morality of war, defence, and the use of force for 1,600 years — and that doctrine does not teach pacifism. It never has. It teaches justice. Those are different things, and the distinction matters enormously when you are investing in a country on NATO's eastern flank in 2026.
This page exists to explain our position clearly, permanently, and with the theological precision the question deserves. We will cite the Catechism directly. We will cite Augustine and Aquinas. We will cite John Paul II — the Polish Pope, who understood better than almost any other figure of the 20th century what happens to a people who cannot defend themselves. And we will explain why, in the specific context of Poland in the third decade of the 21st century, investing in the capacity to defend innocent life is not a departure from Catholic values. It is an expression of them.
The Catholic just war tradition did not emerge from political convenience. It emerged from a genuine theological problem: how does a religion whose founder said "blessed are the peacemakers" and "love your enemies" reconcile itself with the reality that the world contains aggressors, that innocents need protection, and that those with the power to protect them have a moral responsibility to do so?
St. Augustine of Hippo (354–430) was the first to articulate a systematic Catholic answer. Writing in The City of God and Contra Faustum, Augustine argued that war is not intrinsically evil — it is the love of violence, the cruelty of revenge, and the lust for dominion that are evil. A war fought to protect the innocent, restore justice, and secure peace — waged by legitimate authority, with right intention, and proportionate means — is not only permissible but can be morally required. The soldier who defends the innocent is not a killer in the moral sense. He is an instrument of justice in a fallen world where perfect peace does not yet exist.
"The purpose of war, even when waged by just men, is peace. For war is waged by those who strive for peace; it cannot be waged by those who strive for peace in the sense that they disturb it."
St. Augustine · Epistle 189 · To BonifaceSt. Thomas Aquinas (1225–1274) systematised Augustine's insights in the Summa Theologiae (II-II, q.40), identifying three conditions for a just war: auctoritas principis — legitimate authority must declare it; causa iusta — there must be a just cause, primarily self-defence against aggression; and intentio recta — the intention must be to advance good and avoid evil, not vengeance or conquest. Aquinas was not endorsing militarism. He was doing what he always did: bringing rigorous reason to bear on a practical moral question, and refusing to pretend the world is simpler than it is.
The tradition that runs from Augustine through Aquinas through the Second Vatican Council to the current Catechism is not a tradition of reluctant accommodation to political reality. It is a tradition of clear moral reasoning that takes seriously both the sanctity of human life and the reality that defending innocent life sometimes requires force. The Church that built the first hospitals in Europe and staffed them with religious orders also produced the Knights Hospitaller, who did both simultaneously. That is not hypocrisy. That is a sophisticated moral framework applied to an imperfect world.
The current Catechism of the Catholic Church — the authoritative, official, binding compendium of Catholic teaching issued by the Vatican in 1992 and confirmed by Pope John Paul II — addresses war and defence in paragraphs 2307 through 2317. We cite the relevant passages directly, in the Vatican's own translation, without editorial addition.
The fifth commandment forbids the intentional destruction of human life. Because of the evils and injustices that accompany all war, the Church insistently urges everyone to prayer and to action so that the divine Goodness may free us from the ancient bondage of war.
All citizens and all governments are obliged to work for the avoidance of war. 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."
The strict conditions for legitimate defense by military force require rigorous consideration. The gravity of such a decision makes it subject to rigorous conditions of moral legitimacy. At one and the same time: the damage inflicted by the aggressor on the nation or community of nations must be lasting, grave, and certain; all other means of putting an end to it must have been shown to be impractical or ineffective; there must be serious prospects of success; the use of arms must not produce evils and disorders graver than the evil to be eliminated. These are the traditional elements enumerated in what is called the "just war" doctrine.
Public authorities, in this case, have the right and duty to impose on citizens the obligations necessary for national defense. Those who are sworn to serve their country in the armed forces are servants of the security and freedom of nations. If they carry out their duty honorably, they truly contribute to the common good of the nation and the maintenance of peace.
Paragraph 2310 deserves to be read slowly. The Catholic Church does not describe soldiers as a necessary evil to be tolerated. It describes them as servants of security and freedom who truly contribute to the common good. This is the language of honour, not apology. The tradition is not embarrassed by legitimate defence. It dignifies it.
When we speak of Catholic teaching on defence in the context of a fund focused on Poland, we cannot do so without speaking of Karol Wojtyła — Pope John Paul II, born in Wadowice in 1920, ordained a priest in Kraków, elected to the papacy in 1978 as the first non-Italian pope in 455 years.
Wojtyła was a young man during the Nazi occupation of Poland. He watched his country invaded, occupied, and subjected to systematic genocide. He worked in a quarry and a chemical factory under German rule while running a clandestine cultural resistance organisation by night. He understood, with a specificity that no armchair theologian could match, what happens to a people who cannot defend themselves. He understood what it means to live under an occupying power that has both the will and the weapons to do whatever it wishes to an unarmed population. He did not emerge from that experience as a pacifist. He emerged from it as a man who understood that human dignity requires the capacity to defend it.
John Paul II's first visit to Poland as pope in June 1979 was not a political event in the conventional sense. It was a spiritual and moral event whose political consequences — the Solidarity movement, the collapse of Polish communism, ultimately the fall of the Berlin Wall — were the downstream effects of a single message: that a people with a living faith in their dignity as persons created by God cannot be permanently subjugated by an atheistic state, however many tanks and missiles that state possesses. But that message was not a message of passive resistance to all force. It was a message of human dignity — and human dignity includes, according to Catholic teaching, the right and the duty to defend that dignity against those who would violently destroy it.
John Paul II explicitly spoke of the "objective rights of the nation" including the right to existence, to freedom, and to sociopolitical subjectivity. These are not aspirational sentiments. They are moral claims — and moral claims have implications. A nation has the right to exist. A nation that has the right to exist has the right to defend that existence. The weapons in the hands of Polish soldiers, the missiles leaving the Mesko factory in Skarżysko-Kamienna, the Apache helicopters being ordered for the 1st Land Forces Aviation Brigade — these are instruments of a nation exercising its divinely acknowledged right to continue to exist.
Much of the contemporary "ethical investing" conversation has been shaped by secular Environmental, Social, and Governance (ESG) frameworks that embed particular political assumptions — including assumptions about defence and weapons manufacturing — that Catholic investors are not required to share and that the Catholic moral tradition does not endorse.
Many mainstream ESG frameworks treat weapons manufacturing as a negative screened category — alongside tobacco, gambling, and pornography — to be excluded from "responsible" portfolios. This categorisation reflects a secular pacifist assumption: that weapons are inherently harmful and that their manufacture is therefore inherently irresponsible. Catholic Social Teaching reaches a different conclusion. The Catechism explicitly affirms the common good served by legitimate defence. The tradition built over 1,600 years by Augustine and Aquinas and refined through the Second Vatican Council does not identify weapons manufacture as morally equivalent to manufacturing addictive or pornographic products. It identifies unjust war and weapons of mass destruction — which are condemned explicitly — as distinct from the legitimate instruments of legitimate defence.
The Catholic investment tradition has its own framework built on Catholic Social Teaching: subsidiarity (decisions made at the appropriate level of society), solidarity (responsibility for one another's welfare), the common good (the conditions necessary for all people to flourish), and the inherent dignity of the human person. These principles, applied rigorously, lead to a different investment universe than secular ESG — one that can include defence manufacturers serving legitimate national security needs while excluding producers of weapons of mass destruction, torture instruments, or systems designed to target civilians.
Fides Polonia uses Catholic Social Teaching, not secular ESG, as its ethical investment framework. We are not obligated to agree with every political assumption embedded in third-party ESG rating systems, and we do not. We are obligated to invest in accordance with Catholic moral principles as articulated by the Church's Magisterium — and those principles support, rather than condemn, the investment in legitimate national defence we undertake.
The Catechism's conditions for legitimate defence (CCC 2309) are not abstract. Apply them to Poland's current situation and to the specific investments we discuss on this site:
We are a Catholic-founded fund investing in Polish business and Polish defence. The Church teaches that governments have the right and duty of lawful self-defence (CCC 2308). It teaches that those who serve in national defence contribute to the common good (CCC 2310). It teaches that human dignity includes the right to exist as a sovereign nation with the means to defend that existence. John Paul II — who stood in Victory Square in Warsaw in 1979 and asked the Soviet empire to justify its presence in a Catholic nation — understood that freedom is not given by those who hold power. It must sometimes be defended against them.
Poland has been invaded twice in living memory. It has lost six million citizens to two occupations within one generation. The men and women who built the Piorun missile in Skarżysko-Kamienna, who weld the KRAB howitzer in Stalowa Wola, who assemble the Black Hawk in Mielec — they are servants of their nation's security and freedom. The Catechism says that plainly. We invest accordingly.