On 22 November, Leiden scientist Jan Vonk received an ERC starting grant for his research on the building blocks of mathematics. This grant is not his first this year: in fact, this July Vonk also received a Vidi from NWO. Four questions to the scientist who got two grants this year.

President Donald Trump’s decision to freeze U.S. foreign aid is raising concerns about ceding global influence to China. The Associated Press explores how this shift could weaken America’s soft power, traditionally used to build alliances and counter adversaries.

On Tuesday 20 September, David Kilcullen, one of the world’s leading experts on modern warfare, visited Campus The Hague of Leiden University to discuss future developments in special operations and the escalating competition between great powers.

In a recent article for the magazine Public Seminar, Santino Regilme argues that democracy across continents is being quietly usurped by a transnational billionaire class.

Marlinde Kapteijn studied Public Administration at Leiden University and decided to apply for an internship after her bachelor. While she enjoyed the internship and was able to learn a lot, she also had to get used to it: 'I had not expected the ministry to be so hierarchical.'

Framing Poland through the lens of post-socialism, as is common in the social sciences, has become outdated. This label no longer captures the rapid changes that have taken place since the fall of the Iron Curtain. Ola Gracjasz's research shows that people are redefining their national identity, blending…

‘Let us not forget the power of genuine engagement,’ dean Sarah de Rijcke stressed at the New Year's Reception on 7 January 2025, which was also attended by Rector Magnificus Hester Bijl and addressed the Faculty of Social Sciences.

Packages of DNA strands containing silver, measuring just two or three nanometres in size. Leiden physicists Donny de Bruin and Dirk Bouwmeester create these packages, which can enter living cells on their own. They then activate the silver with light, causing the cells to break down. This could, in…

PhD defence

Lecture, LIAS After-Lunch Talk Series

What do ten-year-old children and chatbots have in common? PhD researcher Bram van Dijk studied language development in both children and AI language models. ‘It’s actually quite practical that we attribute human traits to a chatbot.’

Grotius Dialogue

PhD defence

On January 1st Jasper Knoester started as our new dean. How is he finding it? What kinds of things is he doing and what does his day look like? In each newsletter Jasper gives a peek into his life as dean.

Last week, Ajay Gandhi, Assistant Professor at the Leiden University College, wrote an article about how spider's webs can explain the dynamics of social beings.

Leiden University has policies in place regarding travel restrictions for students and staff within the context of their studies, work or research. The basis of these restrictions are the Dutch Ministry of Foreign Affairs travel advisories.

How do you write a good news article? Here are a number of guidelines to help you.

The Faculty Club offers various rooms where meetings can be held in a quiet setting. These rooms are also suitable for receptions or drinks. The style of the rooms is in keeping with the ambience of the Academy Building.

Lecture and book presentation

Sarah Wolff has been professor of International Studies and Global Politics since 8 January. Time for a brief introduction about her field and academic interests.

Lecture

PhD defence

PhD defence

Conference

The University image database contains University images for use in printed materials and websites. The purpose of the image database is to create a central distribution source for all University images.

The Leiden University Library (UBL) has more to offer to lecturers than you might think. The UBL can provide you with general rules for copyright in Blackboard, information skills training for your students, or the option of using library collections as part of your teaching.

Gain new ideas for your teaching and get inspired by fellow teachers during lunch bytes, workshops, and courses. Explore the offerings below.

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.

For every period, it is a challenge to unearth the details of political trafficking; yet the effort needs to include all relevant persons, groups, and institutions – not only those wielding formal responsibilities. We hope to reinvigorate this effort by inviting specialists to present their research…

Research, Transferable skills

The jury of the Africa Thesis Award is delighted to announce that the 2025 prize has been awarded to Yonwaba Matshobotiyana of the University of the Free State, South Africa, with a thesis on Black women's poetry in South Africa.

Lecture, Blue History Network Graduate Forum

Guest lecture

Conference

Here you can find questions and answers about the employee experience survey.

If you handle personal data, there are a number of legal grounds on which this can be done. One example involves obtaining consent from the person in question, also known as 'informed consent'. This informed consent must adhere to several requirements.

Minoren en keuzeruimte

Think of a clear and consistent directory structure.

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.

Didactics

Leiden Law Cast is a podcast made by Leiden Law School, Leiden University, for everyone who wants to learn more about current legal issues.

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.

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.

For conducting experiments involving animals, you need a project license and a valid research plan. On this page, you will read what this entails and how to submit these documents. You will also find other relevant information regarding conducting research involving animals here.

Lecture