Just War and Just Peace

As the Ukraine War passes another milestone, can any war be considered just? Christine Schliesser explores Just War theory and a possible path to Just Peace.

Christine Schliesser

Christine Schliesser lectures in Theology and Ethics at Zurich University, and is a scientific collaborator with the Center for Faith & Society at Fribourg University.

Civilian evacuation across Irpin River during the Ukraine War.

Yan Boechat/VOA via Wikimedia Commons.

Will Germany deliver Leopard 2 tanks to Ukraine? No? Yes? When? Media discussion of the war that the Russian Federation started against Ukraine in 2014 and that entered a new stage one year ago, currently centres on questions of weaponry. Who else will send tanks? And what about fighter aircrafts? No? Yes? When?

In classical military ethics, which has long been dominated by the so called Just War Theory, these questions fall under ius in bello, the right conduct in war. This also includes discussions on proportionality, military necessity and the differentiation between combatants and non-combatants.

Just War Theory has a long tradition in Christian thought. Church Father Ambrose argued that whoever does not ward off injustice from his fellow man (or woman for that matter) when he can, is as guilty as he who commits it. Ambrose’s student, Augustine, then developed this thought in more detail as he laid the foundations for what could be called a bellum iustum, a just war.

Even before going to war, the criteria of the ius ad bellum, the right to go to war, must be satisfied. These include, for instance, a just cause, legitimate authority, prospect of success, right intention and last resort. We encounter these criteria again in slightly modified form in our modern international law. In view of these guidelines, of Russia’s breach of international law, and of Ukraine’s right to self-defence, the on-going war in Ukraine clearly seems to be a just war. Or is it?

Nothing holy or just

Two points need to be made in this discussion. Firstly, there are no just or holy wars. Period. Or as 150 churches, after the horrors of the Second World War, put it in Amsterdam in 1948: ‘War is contrary to the will of God.’ Wars are always an evil and an expression of the failure of human beings to strive for peace. This also holds true for the war in Ukraine. And this means that we need a new dimension in the debate, namely guilt.

Every action – and inaction – here involves guilt. As the German pastor Dietrich Bonhoeffer, who was killed by the Nazis for his engagement in a plot against Hitler, put it:

‘everyone who acts responsibly becomes guilty’.

And even if we become guilty for the sake of the other person, our guilt remains just the same. Yet, as Bonhoeffer concludes, we trust in the grace of God, who calls us to responsible action. , Bonhoeffer’s ideas have been considered dangerous and easily misused to justify any crime, as forgiveness is always available. Nevertheless, we must acknowledge the reality of guilt that pervades any war, including the war in Ukraine.

Just Peace

Secondly, recent years have seen a new kid on the block: Just Peace Theory. While Just War Theory looks at a conflict from the perspective of violence, Just Peace Theory puts the focus on peace. This includes adding a third set of criteria. Ius post bellum looks at justice after a war. We know that after a conflict is before a conflict. We therefore need to pay more attention to what happens after the weapons finally fall silent.

Here, the experiences of truth and reconciliation processes worldwide can help. Both dimensions belong inseparably together and both already begin during a conflict, not just after it. Truth, for example, requires the documentation of war crimes committed by all parties to ensure the prosecution of war criminals later on. And reconciliation is the conditio sine qua non for sustainable peace.

Russia’s war against Ukraine and its threats against NATO and Western countries demonstrate, not least that after the end of the Cold War, opportunities for genuine and sustainable reconciliation were missed as latent hatred, prejudices and stereotypes were allowed to linger.

Just Peace Theory emphasizes that building peace is an art and a craft. It requires specific skills, training and preparation. It also requires virtues of grace, persistence and forgiveness, Countless documented examples world-wide supply empirical proof that these methods actually work. Perhaps it is worth devoting some of the $2,113 billion (2021) of global annual military expenditure for training non-military approaches to address conflict resolution? To learn how to build peace as much as how to wage war? No? Yes? When?

Pathways to Peace

One such initiative is Pathways to Peace. Aiming at peace, justice and reconciliation in times of war, this initiative is currently being developed through the Conference of European Churches, a group of some 120 member churches in 38 countries. With their long-term involvement and intimate knowledge at the grassroot level, faith actors in civil society seem uniquely positioned to connect people, heal relationships, offer a new social imaginary and facilitate practical help.

The objectives of Pathways to Peace include among others to facilitate safe spaces for honest exchange between Ukrainian and Russian church leaders, to develop a network of church leaders and other civil society leaders for exchange on the preparation of peace or to bring together European youth, in particular Ukrainian and Russian young refugees.

The immense potential of faith actors in transforming conflict and building sustainable peace seems to have gone largely unnoticed in the public sphere. Given the prominence of faith in this conflict, it is about time that all relevant actors in our societies, including faith-based initiatives, joined forces to counter this major crisis of our time.

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Identity

Justice

Politics

17 April 2025

3 min read

Deeper conversations on gender will continue after this court ruling

Can the whole mystery of gender be conceded to brute biological fact?

Jack Chisnall

Jack Chisnall is a former gag teller and Oxford Theology graduate, combining the two at Holy Fooling.

A paiting shows four panels featuring women lawyers over a century

Legacy, by Catherine Yass, hangs in the Supreme Court and celebrates one hundred years of women in law.

The Supreme Court.

Every now and again, a society has to have a word with itself about something. Most social changes happen quite organically without a need for this kind of self-conscious dialogue. Hat-wearing in public was almost ubiquitous, for example, until about the middle of the twentieth century, when it simply stopped. No major debate happened about this - the hat simply sidled out of fashion. Western society just sort of internally worked out that the absence of a hat was not improper.

Whether or not gender is something real is not like whether it is polite to wear a hat. It requires a very hard conversation - one which pushes on some of the most fundamental differences people can have about politics, the world, and perhaps things even bigger than that. Whether one agrees with it or not, yesterday was a significant development in that very public conversation: the Supreme Court of the United Kingdom ruled that the Equality Act is predicated on a classic gender ontology (i.e. the ‘realness’ of male and female).

What is at stake here? For some, the expansion of categories like ‘man’ and ‘woman’ to those who have undergone a clinical transition, and those who have an official certificate legally recognising their self-identified gender, is a crucial bellwether of our commitment to equality and freedom. They cite the rates of depression and suicide in this demographic, where an imposed gender causes deep distress.

Opponents of this move (like J. K. Rowling, who will be celebrating right now, no doubt) cite the dangers that de-anchoring gender from biological markers, like chromosomes or reproductive organs, will have. The justification of single-sex spaces is at least partially balanced on the idea that men and women are different, and separation of them is key for our sense of dignity or safety.

But both sides agree that we need copper-bottoms for our terms. All humans want to feel like our words are not empty gestures. Biological sex realists want to hold out for fundamentals which can be observed scientifically. This tallies with lots of observable features, history, and culture - but those who hold out for a definition of gender rooted in self-identification are not wrong to point out that overly medicalised definitions will struggle to divide all of the data without remainder. There are genuine cases of intersex people, for example.

What does a Christian like me think? Someone who is tied to what the Church has historically taught might look to the New Testament, where Jesus, for example, teaches that ‘male and female’ is a good, given aspect of our reality by God. That much might be consoling about the court’s decision. But a Christian may also feel a little cold about conceding the whole mystery of gender to brute biological fact. Surely there is something about being a woman or a man that is more than merely possession of certain physical features, as gender-critical activists claim?

St Paul, in one of his New Testament letters, says that men and women are an expression of something even more fundamental than chromosomes: “I speak of Christ and the Church”. But this does not make our genders into shadowy symbols. Rather, it says our gender difference is more real for pointing at is something beyond the physical. It is rooted in the most real thing a Christian knows: that God reconciles the world to himself through Jesus as if it was a cosmic marriage. On this view, maleness and femaleness is not a tick-list of attributes, but a goal at which we are all striving. It will require humility, mutual service, and love.

Society will keep on having its conversation about what exactly men and women are. But if it is to make sense of what things are really like, it may have to keep digging yet.

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