Across the world, the question of how to deal with former fighters remains urgent. From Nigeria and Iraq to Syria and the Sahel, governments are wrestling with how to bring people who once fought for violent groups back into society. Reintegrating ex-fighters – after appropriate punishment – is unavoidable. This is because alternatives such as indefinite detention, capital punishment or abandonment are unsustainable and risk fuelling future cycles of violence.

Yet local communities often seem to resist welcoming ex-combatants back.

How, then, can societies balance the need for reintegration with local resistance?

As scholars of public opinion during and after episodes of political violence, we set out to better understand these tensions. We have years of fieldwork experience in Nigeria and other conflict-affected settings and, together with our local team, we conducted a study to assess citizens’ views on reintegration. How risky would it be to take a certain person back? And does this person deserve a second chance?

Our research was conduced in Nigeria, where Boko Haram’s insurgency has devastated communities for more than two decades. As the group has weakened and thousands of fighters have surrendered, the government has launched programmes to reintegrate them into civilian life. These initiatives have achieved limited success so far, as many citizens remain wary and resistant to their return.

We surveyed around 2,000 young Nigerians and asked them to evaluate different hypothetical profiles of former Boko Haram fighters. This allowed us to see how different characteristics shaped public preferences.

We found that respondents were more forgiving towards former fighters who were forced to join the insurgency and expressed remorse afterwards. They were less willing to reintegrate more militant and less repentant offenders.

Our findings speak to several high-level policy debates today. Nigeria continues to run reintegration programmes. While some returnees have successfully rejoined their communities, others have faced suspicion, threats, and even renewed displacement.

What we found

Three patterns stood out:

Why they joined matters. People were far more open to reintegrating fighters who were forcibly recruited or joined as children than those who joined voluntarily – especially for ideological reasons. As one respondent put it:

Young fighters had little guidance or knowledge of what trouble they were going into.

What they do after leaving matters even more. Former fighters who left voluntarily and took part in reconciliation efforts, especially cooperating with the police or army in their fight against Boko Haram, enjoyed much stronger public support. One respondent even went a step further, suggesting that

instead of a prison sentence, former militias should serve a period of compulsory community service rebuilding the states they have destroyed.

Some atrocities were harder to forgive. As one participant put it:

The only precondition is that they have never taken a life. No killer deserves to be free, let alone get amnesty.

Still, our experimental results show this mattered less than one might expect: while people were reluctant to accept those who committed severe violence, the circumstances of joining and leaving weighed more heavily.

These same patterns also influenced whether people believed reintegration would succeed, and what punishments they thought appropriate. Fighters who were forced to join and left voluntarily were expected to reintegrate successfully and were more likely to be granted amnesty. Fighters seen as willing culprits who refused reconciliation were more often judged to deserve the death penalty.

Importantly, these patterns held broadly across different groups – whether respondents were Christian or Muslim, from the north or south, victims or non-victims of Boko Haram violence.

In short: willingness to forgive depended less on the violence of the past than on whether ex-fighters signalled remorse and a genuine commitment to peace today.

Why this matters

Our research suggests that reintegration and reconciliation is more likely to succeed when:

(1) Clear conditions are set. Linking reintegration to reconciliatory behaviour can reassure communities.

(2) Citizens are informed. Communication campaigns that explain how some fighters were coerced, or highlight the risks taken by those who defected, can reduce public resistance.

(3) Reconciliation is made visible. Publicising ex-fighters’ efforts to cooperate with authorities or support victims helps rebuild trust.

The lesson is simple but often overlooked: preparing societies for the return of ex-fighters is as important as preparing the fighters themselves. Without community buy-in, reintegration risks deepening divides instead of healing them.

This article is republished from The Conversation, a nonprofit, independent news organization bringing you facts and trustworthy analysis to help you make sense of our complex world. It was written by: Amélie Godefroidt, IÉSEG School of Management; KU Leuven

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Amélie Godefroidt received funding from the Research Foundation Flanders--FWO for this study.