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War & peace
4 min read

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 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.
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.  

Review
Art
Culture
Ethics
War & peace
5 min read

Can we stop killing each other?

How art, theology, and moral imagination confront our oldest instinct

Jonathan is Team Rector for Wickford and Runwell. He is co-author of The Secret Chord, and writes on the arts.

A 17th Century painting of Moses and the brazen cross.
Luca Giordano, The Brazen Serpent, c.1690, oil on canvas.
Compton Verney, photography by Jamie Woodley.

What more important question can there be for humanity, Jago Cooper, Executive Director of the Sainsbury Centre, asks than ‘Can we stop killing each other?’ The Sainsbury Centre’s radical exhibition programme explores the big issues in contemporary society (see my article ‘Life Is more important than art’) so has rapidly arrived at the point where it is exploring what has wrong with the world when killing occurs and how can we put it right. 

Cooper sets out the ground that this series of exhibitions seeks to cover: ‘From interpersonal violence to state level conflict, killing has spread its devastating impact throughout all human cultures across the centuries. Why does this violence occur? And can it be better prevented at a time when increased societal pressures of population growth, resource scarcity, human migration and rapid environmental change make the risk of conflict higher? Every day we read about horrifying acts playing out locally and internationally, but what is the answer to stopping them?’ 

Can we stop killing each other? includes an installation by Aotearoa/New Zealand artist Anton Forde, a series of new paintings reflecting on the refugee crisis by Ethiopian artist Tesfaye Urgessa; presentations of historical artworks such as Claude Monet’s ‘The Petit Bras of the Seine at Argenteuil’, and an exhibition spanning Shakespearean tragedy to Hitchcockian spectacle, which asks questions of violent stage and screen narratives, plus (from November) ‘Seeds of Hate and Hope’ highlighting personal artistic responses to global atrocities, such as genocides, ethnic cleansing, war crimes and crimes against humanity.  

It starts, however, with a room displaying Biblically themed explorations of this question. ‘Denunciation of Cain’ by G.F. Watts depicts the after-effects of the first murder with Watts viewing Cain as a symbol of ‘reckless, selfish humanity’. A pair of paintings by Luca Giordano then take us deeper into the ambiguities of our human responses to anger and violence. ‘The Brazen Serpent’, tells the story of the Israelites’ journey from Mount Sinai in Egypt to the Promised Land of Canaan. On this journey, a plague of poisonous serpents punishes the Israelites for their disobedience and lack of faith. Moses is instructed by God to make a bronze, or ‘brazen’, serpent that will heal those that repent. The curators ask, ‘Does this portrayal of killing as a punishment set a cultural precedent, or establish a moral code for right and wrong?’ Alongside is ‘The Judgement of Solomon’ in which two women both claim to be the mother of a living child and where the true mother is revealed by means of an order that the child to be cut in half with a sword and shared. The true mother reveals herself as the one who will give the baby away to protect the child’s life. Here, the threat of violence is used to bring about justice.  

William Hogarth’s print series The Four Stages of Cruelty, with verses by Reverend James Townley, reveals how violence escalates and shows how a lack of moral supervision can lead to a life of crime. Finally, Matt Collishaw’s series of thirteen photographic works entitled ’Last Meal on Death Row, Texas’ alludes to the number of apostles at the Last Supper while depicting the last meals chosen by condemned prisoners on death row in the state of Texas, United States. 

The curators suggest that: ‘The artworks in this gallery, and beyond, suggest that there is a choice between peace and conflict and that moral stories exist to guide us towards making ethical decisions in real life. Art provides a powerful connection through which to experience life at its most chaotic and incomprehensible, enabling us to pause and reflect on the darkest aspects of human existence. It can also create vital opportunities for society to mourn and remember victims of violence, and to come together in acts of healing and repair.’  

These images and the Bible stories on which they are based give us more than simple moral guidance, however. They also provide an explanation for the existence of conflict between human beings and reveal God’s subversion of that ingrained human tendency. 

In the story of Cain and Abel, Cain is jealous of Abel and kills him as a result. The anthropologist René Girard suggests that this story reveals the way in which we consistently act as human beings. We desire something that is possessed by someone else and become disturbed through our longing for what we don’t have. We resolve our disturbance by creating a scapegoat of the person or people who appear to have or prevent us from having what it is we desire. When the scapegoat is killed, we can gain what we desire and also release the sense of disturbance that we feel.  

This scapegoat mechanism becomes expressed in religions involving human sacrifices as scapegoats to appease their gods. In the story told within the pages of scripture, it is out of such religions that Abraham is called to form a people who do not sacrifice other human beings, but instead use animals as their scapegoats and sacrifices. Jesus is later born into this people who have subverted the existing practice of scapegoating and he further subverts this practice because, as he is crucified, God becomes the scapegoat that is killed. Once God’s Son has become the scapegoat, for those who follow him, the scapegoat mechanism is undermined and the scapegoating of others should no longer be possible. 

In ‘The Judgement of Solomon’, the threat of violence is used to reveal the desire of the woman who had taken the mother’s child and the self-sacrifice of the true mother. On the cross, the violence meted out to Jesus reveals the full horror of the scapegoating mechanism in the torture and violent death of the wholly innocent one.   

Jesus explicitly equated his crucifixion with the raising up of the bronze serpent that brought healing because in that story, when it is raised, as Jesus also was, the image of the source of the poison in the lives of human beings became the source of healing. That is also the promise that Christianity holds out to us in relation to the effect of Jesus’ crucifixion where he becomes sin for us. It heals us of our absolute need to scapegoat and harm others. 

 

Can We Stop Killing Each Other? Sainsbury Centre: 

  • Tiaki Ora ∞ Protecting Life: Anton Forde, 2 August 2025 – 19 April 2026 

  • Eyewitness, 20 September 2025 – 15 February 2026 

  • Roots of Resilience: Tesfaye Urgessa, 20 September 2025 – 15 February 2026 

  • The National Gallery Masterpiece Tour: Reflections on Peace, 20 September 2025 – 11 January 2026 

  • Seeds of Hate and Hope, 28 November 2025 – 17 May 2026 

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