At the start of his PhD, intelligence analyst William Lippert didn’t yet know what to expect. Little had been written on the subject. Three years later, he is sure: conventional arms control agreements promote peace.

The chance that it will do so is about zero, but Russia is legally obliged to investigate violations of law during the war in Ukraine. States that enter into an armed conflict often deny liability, but under international humanitarian law and human rights they are obliged to investigate their military…

The decolonisation war in Indonesia was violent partly because the Dutch military operated on the conviction that ‘an uprising had to be forcibly suppressed.’ This what historian Christiaan Harinck from the KITLV discovered in his PhD research.

Food security touches upon human rights, international law and sustainable development. These frameworks are not separate worlds but deeply interconnected; something that becomes painfully clear in times of climate crisis, armed conflict and inequality.

Francesca Albanese, UN Special Rapporteur for human rights in the occupied Palestinian territories, visited Leiden Law School on 8 December within the scope of International Human Rights Day.

Lecture

What defence strategy should the Dutch government adopt for the next four years? Our experts advise investing in social resilience, strengthening ‘soft power’ and integrating defence awareness into education.

Study information

On Monday 8 April, a high-profile guest visited Leiden Law School. Dutch Minister for Foreign Trade and Development Cooperation Geoffrey van Leeuwen gave a powerful speech to students about defending our interests in all current global developments.

Moderne oorlogsvoering kent geen grenzen. Dreigingen zijn steeds vaker digitaal. Promovendus Annelies van Vark stelt dat Scandinavië beter voorbereid is op gevaar. Zij pleit voor een sterkere rol van de krijgsmacht, herinvoering van de dienstplicht en paraatheid – óók bij burgers.

It may be the best tradition of them all: on the university’s birthday, its professors go to primary schools to teach a special lesson. This year, 75 professors visited 44 local schools. ‘How does stress get into your body?’

A team led by Dr. Yannick Veilleux-Lepage (Institute of Security and Global Affairs) and Joris Larik (Leiden University College The Hague) have secured research funding from the Canadian Department of National Defence and Canadian Armed Forces funded RWE-CAF Research Network.

Arts and leisure, Arts and leisure

Arts and leisure, Arts and leisure

Lecture

Good mental health provides a strong foundation for study and work. It is important to seek help if you are not doing well. There are a range of ways in which you can work on your mental well-being. You can also turn to others for help and guidance. Take a look at the various options available.

New Report Launched by ACPF with the support of the Department of Child Law and Health Law

Study information

Project TARGET is a research project aimed at the relation between the illegal arms trade and firearm violence. In a study conducted in seven countries, the researchers took a look at the differences and similarities. Katharina Krüsselmann and Marieke Liem took a closer look at the situation in the…

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…

The mission in Uruzgan Province in Afghanistan was a formative experience for Dutch soldiers in which many lessons were learned. But most of those lessons have already been forgotten.

When and how commenced the use of fire by early humans? Armed with stones, peat moss, and fungi, archaeologist Andy Sorensen tries to answer that question. In the February edition of the Dutch language version of National Geographic Magazine his research features in the section The Discovery.

How do you ensure that people who have had a stroke get the right therapy at the right time? This is the question researcher Jorit Meesters wants to answer.

Europe’s security suddenly looks uncertain now President Trump has started negotiations with Putin. What does this mean for the Netherlands? What do we need to do?

Jus post bellum, the body of laws and norms governing the transition from armed conflict to peace, has emerged as a crucial issue for international law scholars, governments, and all concerned with building a just and sustainable peace. The Jus Post Bellum Project, funded by the NWO and hosted by the…

Martijn Kitzen has been appointed professor by special appointment of Military Science at ISGA on behalf of the Royal Netherlands Society for War Studies (KVBK).

There is a real chance of war closer to home, political and military leaders in Europe have warned. What does Frans Osinga, Professor of War Studies, think about the threat and what we should do?

Researchers have discovered the most distant Milky-Way-like galaxy yet observed. Dubbed REBELS-25, this disc galaxy seems as orderly as present-day galaxies, but we see it as it was when the Universe was only 700 million years old. This is surprising since, according to our current understanding of…

North Korea may seem like an isolated country but it has strong ties with African regimes. This alliance, which trades in arms despite international sanctions, is increasingly operating out of the liberal world order’s sight, PhD candidate Tycho van der Hoog warns.

Prof. dr. ir. Bas Rietjens of the Dutch Defense Academy (NLDA) has been appointed Professor by special appointment Intelligence in War and Conflict at Leiden University’s Institute for Security and Global Affairs (ISGA). The appointment of Rietjens is the result of a more intensive collaboration between…

The United States used threats to influence the nuclear programs of Iran, Libya and South Africa. How effective was this diplomatic coercion?

Successfully completing a master’s thesis in Political Science is no small feat. Not only is this for most students the most extensive and in-depth research report they have ever written, the work is also held to very high standards. Yet, every year students manage to impress their instructors and demonstrate…

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

Optimised antibiotic combinations can combat bacteria more effectively while also slowing the development of resistance. Scientists from five European countries are joining forces to identify such combinations and provide tools for others to do the same. The project is led by Professor Coen van Hasselt…

The volume, Heritage Destruction, Human Rights and International Law, co-edited by Grotius Centre, Associate Professor Joe Powderly, and Dr Amy Strecker (Associate Professor, UCD), has been published by Brill/Nijhoff.

The United Nations Committee on the Rights of the Child (CRC) has accused Finland of violating the rights of Finnish children by leaving them in life-threatening conditions in Syrian camps. Ann Skelton, member of the committee, calls the situation 'inhuman'.

Dutch troops, judges and politicians collectively condoned and concealed the systematic use of extreme violence during the Indonesian War of Independence. Historians have now shown how this could happen. ‘It was scandal management rather than prevention,’ says Leiden historian and research leader Gert…

As a strategy and international security specialist, Julien Bastrup-Birk (41) has advised both NATO and the United Nations Office on Drugs and Crime and worked at the UK Foreign and Defence ministries. Next week, he will defend his PhD on clandestine non-state power in the international system.

Every year, the Netherlands Red Cross and Belgian Red Cross-Flanders organise the Frits Kalshoven International Humanitarian Law Moot Court Competition. Eight teams from Belgium and the Netherlands participated in the 17th edition of the competition, from 5-7 March 2025 in The Hague. The team from Leiden…

On the occasion of the conferral of an honorary doctorate to children’s rights activist Graça Machel, a fund has been established that will enable two female students from South Africa to come and study in Leiden.

Leiden University Proudly Announces Dr. Mikiko Otani as the Rotating Honorary Chair Enforcement of Children's Rights 2023/2024

Amid the many traditions of Leiden’s 3 October Festival, a relative newcomer is beginning to take hold: the Science Market. At market stalls, the people of Leiden could explore or even participate in Leiden’s research – performing an ‘operation’ in the street, for example.

University is often a period of sexual exploration and experimentation, generally to the satisfaction of all involved. But sometimes you want it and the other doesn’t. Or vice versa. Or you can’t really tell. This is what the Safe Space play at Theater Ins Blau was about on 11 October. And: can your…

Nathaniel Martin, Professor of Biological chemistry, wondered what would happen if you take an antibiotic that has been known for 70 years and try to improve it with the latest tools of modern chemistry. Turns out it can become up to a hundred times more potent and prevent the growth of some drug-resistant…