The steady decline in lethal gun violence in the EU came to halt in 2012 and some countries, such as Sweden, have even noticed an increase since then. An arms race among drug criminals and an increase in the availability of illegal firearms could lead to more criminal and gun violence. This is one of…

Extremist users of Telegram are moving en masse to other chat apps, such as the anonymous SimpleX. In this way, they hope to avoid detection, now that Telegram founder Pavel Durov is going to share personal data of criminal users with authorities.

Youth crime has plummeted in the Netherlands. Good news, you might think. Yet we need to look critically at existing sanctions, says Professor by Special Appointment André van der Laan in his inaugural lecture. ‘We should evaluate whether our response is just.’

Mia Thomaïdou wants to investigate how criminal courts understand and use the increased knowledge of human behavior. Her Rubicon grant allows for two years of research at the Rutgers University School of Criminal Justice. Leiden behavioral scientist Thomaïdou will be living in New York, where as part…

Pavel Durov, CEO of chat and messaging app Telegram, was arrested in France last week. The Russian tech billionaire flew into Paris by private jet and was arrested on suspicion of cybercrimes. Telegram allegedly facilitates criminal activities such as money laundering. This raises the question of how…

How does our brain interpret traces of evidence? Can someone who is suffering from brain damage be held accountable for criminal offences? And should it be possible to adjust a criminal’s behaviour with deep brain stimulation? These questions were addressed during the Public Scientific Day Brein & Recht…

Leiden University College (LUC), an institute of Leiden University in The Hague – the international city of peace, justice, and security – offers the English-taught Bachelor's degree in Liberal Arts and Sciences: Global Challenges since 2010. Inspired by the American university college model, LUC combines…

You can activate and manage your account via Account Services. To make the best use of Account Services, it is important that you set your account properly the first time you use it.

Leiden University uses Security staff for access control and large or sensitive events.

Maaike Kempes believes more attention should be paid to non-congenital brain injuries in suspects. This may partly explain their criminal behaviour.

Arbeidsuitbuiting van migranten wordt als een vorm van het strafrechtelijke delict mensenhandel beschouwd. De rechtspositie van de slachtoffers is mede daardoor ondergeschikt aan de strafrechtelijke procedure. Dat kan en moet anders, stelt Gerrie Lodder in haar proefschrift. Promotie op 21 april 202…

Professor Dr. Carsten Stahn LLM., Professor of International Criminal Law and Global Justice at the University of Leiden, completed his habilitation in July 2020 at the Humboldt-University zu Berlin and acquired the Venia for Constitutional Law, International Law and International Criminal Law. The…

Law firm Ficq & Partners has pulled out of the Marengo trial in the Netherlands. It claims that the use of a crown witness entails ‘unmanageable risk’. Do the advantages of the crown witness scheme outweigh the risks? Jan Crijns takes stock in Dutch newspaper ‘Trouw’.

The Grotius Centre for International Legal Studies in collaboration with the University of Geneva, the Chinese Journal of International Law (ChineseJIL, OUP) and the European Society of International Law (ESIL), are pleased to invite public international scholars and researchers to attend a conference…

Courts that adjudicate war crimes or other crimes against humanity are increasingly taking regional norms and cultural values into consideration. PhD candidate Seun Bakare examined whether this could also be an asset in cooperation with the International Criminal Court (ICC).

If you end up in prison somewhere in the world, the chances are you won’t be allowed to vote. If it were up to researchers Tom Theuns and Andrei Poama, rather than disenfranchise felons, we would oblige them to vote. That would be a better way to express democratic values.

From April 2022, Professor Paul Nieuwbeerta will be working one day a week as affiliated professor for Statistics Netherlands (Centraal Bureau voor de Statistiek (CBS)). He is Professor of Criminology at the Institute of Criminal Law and Criminology, Leiden University.

A complete transformation of the steel cycle in the Netherlands with the ultimate goal of a CO2 neutral steel sector by 2050. For this purpose, the Growing with Green Steel program receives €100 million from the National Growth Fund. From Leiden, Professor of Industrial Ecology René Kleijn is involv…

Grondstoffen werden vroeger over duizenden kilometers afstand vervoerd. Waarvoor werden ze geruild en waarom sloten mensen in West-Azië zich aan bij deze handelsnetwerken?

Doğukan Yilmaz chose a study that aligned with his favourite subjects, and it paid off. For his bachelor thesis, he developed a new model to better predict an important chemical reaction. ‘On the edge of what is possible at the bachelor level,’ his supervisors write. Thanks to his impressive achievements,…

Rich countries are getting richer because of environmentally polluting (construction) investments from the past, largely at the expense of poor countries. This was shown by long-term economic and environmental data. 'The gap between poor and rich countries is widening.' Scientists from the Leiden Institute…

Cryogenic memories, antibiotic treatment for urinary tract infections and recycling plastic sustainably. These are the subjects of the three NWO-XS grants awarded to Leiden Science researchers.

The International Criminal Court (ICC) is under intense scrutiny when it comes to prosecuting international crimes. This due to increasing conflicts worldwide. During her visit to Leiden, the President of the Court, Judge Tomoko Akane, said that the Criminal Court will not yield to threats.

André van der Laan has been appointed Professor by Special Appointment of Juvenile and Adolescent Crime at Leiden University, a chair established by the Leiden University Fund (LUF) and the Dutch Research and Documentation Centre (WODC). It is the first time that a professorship by special appointment…

Can politicians say whatever they want? What is the limit and when can the Public Prosecution Service act? PhD candidate Jip Stam examined the limits of free speech in criminal law. 'Intervening too soon can threaten democracy and the rule of law,' he warns.

Are international courts effective? Dr Fatou Bensouda, a former Lead Prosecutor of the International Criminal Court in The Hague (ICC), will discuss this issue during her lecture at the Owada Symposium 2025. The ICC’s efficacy depends on the actions of its member states, she says.

Doctoral Grant for lecturer to research witness protection at the international courts.

As of 1 April 2025, Professor E.A.L.M.G (Elke) Moons has been appointed professor by special appointment of the chair ‘Crime Statistics’ at Leiden University’s Institute of Criminal Law and Criminology at Leiden Law School.

Recently more than five hundred workers at metal companies in Dutch cities Zwolle and Kampen went on strike. Their aim is better pay and the workers have now been on strike for twelve weeks. Just how effective is striking in collective bargaining?

One perspective, one cell, one outlook on life: what are we all prisoners of? That’s the question Vrij Nederland put to various experts, including Joni Reef, Assistant Professor and Research Fellow at the Department of Criminology.

The EU proposal for a regulatory framework on artificial intelligence will not prevent the dangers of cybercrime or the spreading of fake news using ChatGPT. Cyber criminals can use the new technology to write harmful software, phishing mails and fake news.

At the 24-th session of the Assembly of States Parties to the Rome Statute, held in The Hague 1-6 December, the Grotius Centre for International Legal Studies played a prominent role, contributing cutting-edge research and expert insights to key debates on international law.

Investigation services and cyber criminals both make grateful use of the opportunities offered by digital technologies. Both groups' use of these services leads to breaches of privacy for citizens. The current legislation falls short in providing protective measures, is the conclusion reached by Professor…

Sex without mutual consent is a criminal offence. The proposed new Dutch sexual offences law aims to better protect victims of sexually transgressive behaviour. But the key issue is this: the rules of evidence have not changed, so will victims actually benefit from the new legislation?

Woensdag 7 september bezochten de nieuwe eerstejaarsstudenten Rechtsgeleerdheid en Criminologie de Stadsgehoorzaal voor een College Tour met als thema: Strafzaken en de media. Presentatrice Annemarie Brüning, bekend van Hart van Nederland, ging hierover in gesprek met professionals uit het vakgebied…

To mark Leiden University’s 450th anniversary, this exhibition pairs historic photographs with contemporary research. Seven ‘Then & Now’ diptychs show how the Institute of Physics blends a rich past with cutting‑edge science.

Leiden criminologists have co-developed an artificial intelligence technology that tracks firearms incidents by scanning over 350 news sources.

The Grotius Centre for International Legal Studies is proud to announce a fortified partnership with the International Bar Association to annually stage the largest moot competition focused on international criminal law: The International Criminal Court Moot Court Competition.

Met haar spannende onderzoek naar strafrechtelijke waarheidsvinding in Europa sleept Linda Geven dit jaar de Gratama Wetenschapsprijs voor jonge talentvolle wetenschappers in de wacht.

On 26 January, Rowie Stolk, Laura Hanrath and Marloes Noorloos spoke at the lecture ‘The Right to Demonstrate under Scrutiny’. This discussion session, part of the university lecture series Community. Conversation. Connection., was organised in response to difficult questions about the right to demo…

Researchers at the Universities of Amsterdam (Uva) and Leiden together with the Netherlands Cancer Institute and Oncode Institute have received a €10,6 million ERC Synergy Grant to develop innovative therapeutic approaches to target glioblastoma. This is a deadly primary brain tumour for which no curing…