Jelle van Buuren, Assistant Professor at the Institute of Security and Global Affairs, discusses the death of Al-Baghdadi and whether this could also mean the end of IS.

Vertegenwoordigers van negentien landen hebben in Davos de eerste handtekeningen gezet onder Donald Trumps nieuwe ‘Board of Peace’, maar deskundigen, waaronder emeritus hoogleraar internationaal publiekrecht, Nico Schrijver, waarschuwen voor de NOS, dat het initiatief de VN kan ondermijnen en te veel…

The Leiden University team representing the International Institute of Air and Space Law (IIASL) won the World Finals of the Manfred Lachs Space Law Moot Court Competition that took place in Paris on 20 September 2022.

In an attempt to give European citizens a say over who should lead the European Commission, the European Parliament has opted for so-called 'Spitzenkandidaten'. Prior to the elections for the European Parliament, the EP’s political parties appoint lead candidates for the role of Commission President,…

Leiden University strengthens the collaboration with the Chinese Xi’an Jiaotong University. The Chinese delegation visited the Faculty of Science to talk about collaborations in the field of life science and data science.

Princess Beatrix celebrated her eightieth birthday on 31 January. She has a warm bond with Leiden University, having studied Law and Sociology here. Since graduating, she has been a frequent visitor to the University, to receive an Honorary Doctorate, for example, and at the re-opening of the Academy…

The American president Trump is considering military intervention in Mexico to get rid of the drug cartels once and for all, but Mexico is not interested in other countries' interventions. According to Jelle van Buuren, Assistant Professor at the Institute of Security and Global Affairs, Trump's much…

The saga surrounding Dutch football club Vitesse continues since the presiding justice in the appeals case appears to have a supporter’s card. Arie-Jan Kwak, assistant professor, spoke to ‘NRC’ newspaper: ‘The question’s not whether the justice was in fact impartial or not.’

Anyone in Leiden wanting to join a student association has plenty to choose from. But the risk of alcohol abuse is a very real one. Leiden University, Leiden University of Applied Sciences and dozens of student associations have signed a new alcohol covenant that promises they will do their best to…

The US attack and the arrest of Venezuelan President Maduro have raised questions worldwide. Two Leiden experts in international law, Anna Marhold and Jens Iverson of the Grotius Centre, told media outlets that this constitutes a violation of international law.

Vasiliki Kosta acted as a speaker during the Dutch-German Science Days held on 26 and 27 November 2025, on the overarching theme ‘Academia in times of global crises: How to deal with the effects on our systems? What can we learn from each other and what can we do together?’.

On Monday 4 September, Professor Christopher Martinez, from the Universidad de Concepción (University of Concepción), Chile, was invited by the Department of Constitutional and Administrative Law to introduce his forthcoming book at our university.

On Tuesday 23 May 2023, the International Court of Justice (ICJ), in collaboration with The Hague Academy of International Law, held an event to commemorate the life of the Brazilian jurist Antônio Augusto Cançado Trindade, who served as a Member of the Court from 2009 until his death on 29 May 2022…

The University's childcare centre, de Kattekop, has been awarded the 2017 Regional Award by South Holland. In an independent survey, parents gave the centre an exceptional score of 9.4,.

Leiden has one of the most petrified inner-cities of The Netherlands. This is not beneficial for the biodiversity crisis and Leiden University, with a significant number of buildings within the Singels. The priority should be to make a positive impact on the matter.

At the invitation of the Dutch representation of the European Commission, Vestert Borger participated in an expert meeting on the completion of the Economic and Monetary Union on Friday 24 June.

Election Day is over, but it's by no means clear who the new President of the United States will be. On the morning after Election Day, US expert Sara Polak relects on the results that are in so far, and looks ahead to the coming days.

Marco Bronckers, professor for trade law at the Europa Institute at Leiden University, is cited by POLITICO as one of the initiators for a new approach to the ratification of EU trade deals.

Within the scope of innovating and connecting – the theme of our new Strategic Plan – I paid a visit to Brussels last week. It is important to give Leiden University a face in Brussels and to show our expertise, on Africa for instance.

From the new street language Smibanese to 17th-century manuscripts: the first national Dutch Studies Open Day explores a wide range of topics. The Open Day will take place on Saturday 7 March in Leiden. Frits Spits will broadcast his radio programme ‘De Taalstaat’ (The Language State’) from the Kamerlingh…

It is exactly one year ago that the university had to close, bang in the middle of the academic year. Suddenly, on that third Monday in March, we found ourselves at home, working and studying online – many of us from that cramped attic or student room. The momentous coronavirus year in pictures.

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?

The university may seem a bit subdued in the run-up to the Dutch elections on 29 October. The media has barely mentioned education as an election issue, but behind the scenes the university is lobbying hard, says acting President of the Executive Board, Timo Kos. ‘We’re fighting for the future of our…

Dovilė Rimkutė, Assistant Professor at the Institute of Public Administration in The Hague, received the prestigious VENI grant for her research on risk regulation. 'We expect science to be the core basis of risk regulators’ decisions,' says Rimkutė, 'but at times threats to the regulators’ reputation…

Leiden University is organising two international conferences on security from 7 to 10 November in The Hague. Power relations, negotiating with extremists, cyber espionage, and the experience of a real crisis situation are some of the issues on the agenda. The conferences will be opened by Mayor Jozias…

The housing crisis is affecting a substantial group of Dutch citizens and is one of the main election themes this year. How did things get this far and what should the new cabinet do in the coming four years to address the problems? Three Leiden researchers give their answer.

How do Nepalese exiles in England celebrate their festivals? What are North Korean monuments doing in Zimbabwe? The ‘Heritage on the Move’ exhibition shows what happens to cultures under the influence of migration. From 3 December to 7 January in Leiden University's Oude UB.

This year four research trainee projects were approved by the faculty to be carried out at the Institute for History this semester.

Interdisciplinary cooperation between public and private actors is of vital importance for facing contemporary security and global affairs challenges. This was the main conclusion of two conferences hosted by the Institute of Security and Global Affairs of Leiden University from 7-10 November 2016.…

Leiden University, Delft University of Technology and Erasmus University Rotterdam are important players in the world of self-learning machines that can work together with people. Moreover, the three have close ties in the field of AI and hope to further strengthen this collaboration in the future.…

From artificial intelligence to letters from the Dutch East Indies and from breast-cancer gene BRCA-1 to the collaboration between government and opposition: nine researchers from Leiden University have been awarded a Vidi grant for their research.

What is freedom worth in times of hunger? ‘Beleg’ is a modern interpretation of Lucretia van Merken’s 1774 play. With five performances in Leiden’s Schouwburg theatre, the play is a prominent part of the Relief of Leiden celebrations, and Leiden alumni are playing a big role. Take a look behind the…

How can we guarantee the safety of the crown witness scheme for both crown witnesses and lawyers? How can we ensure that online conversations between lawyers and their clients remain confidential? And what are the risks of extra secure communication tools?

A beautiful speech by vice-dean Bart de Smit, a mini-lecture on exoplanets and the presentation of three faculty awards. That's how we started the new year at the faculty. Together with colleagues and students, we raised our glasses to a new year full of great collaborations, science and education.

For too long the Dutch collective memory has judged the Jewish Council too harshly. This perspective needs to be adjusted, Bart van der Boom argues in his new book ‘De politiek van het kleinste kwaad’ (lit. ‘The Politics of the Lesser Evil’).

Since the invasion of Ukraine in 2022, Russia has been conducting a covert sabotage campaign against Europe. The ‘Bewaken en Beveiligen’ (Surveillance and Security) project team at Leiden University has investigated the scale of these operations and compiled its findings in the report Russian Operations…

Video conferencing from your sitting room and algorithms on social media that know your interests: new technology is an increasingly integral part of our lives. At the same time there is a growing call to protect our privacy, and this is causing friction, at the University too. In part because of the…

Now that the Herta Mohr building is fully operational, construction work is moving to the other side of the University Library. Over the coming years, the former Matthias de Vrieshof will be transformed into the Aleida Nijland building. Architect Bart van Kampen tells us more about the plans.

At one time, the railway from Kimberley to Kambove in Southern Africa symbolised prosperity and progress. Today, the exhausted mining towns along its route are marked by decay and pollution. Professor Jan-Bart Gewald has been awarded an NWO L grant to investigate the long-term global consequences.

More than half of the Indonesian population lives in cities. What does this mean for public health? How sustainable are these megacities? This is the subject of the ‘Urban Transitions’ Summer Academy on West Java. This summer course is also the kick-off for a renewed interdisciplinary partnership…

After its highly successful first two editions in 2024 and 2025, we are delighted to announce the third Leiden eLaw Summer School from 22 to 26 June 2026, both in person in Leiden and online. This year’s theme is ‘The EU Digital Omnibus – Streamlining Rules, Sacrificing Standards?’

Over the past year, many of our staff and students have won prizes, been awarded a substantial grant or been appointed to an academic association or a position in public life. All of these are good reasons to include them in our 2018 Hall of Fame. We are proud of them all.

It was challenging to get civil servants from the first Trump administration to speak about their work experiences, but sociologist Jaime Lee Kucinskas succeeded. The picture that emerged from her findings, she says, is far from positive. 'The more I spoke with them, the more emotions I saw. They were…

Bribing a politician to gain influence or making sure friends end up in powerful positions: Brazilian energy companies use these power strategies daily.

Part Three: A Change of Course

On 26 October, Leiden University held its first online signing ceremony, signing an agreement with China’s top university Tsinghua to establish a joint PhD programme to co-foster young researchers in the fields of astronomy and astrophysics.

Islamic State may be losing ground rapidly, but Syrian President Assad's position is gaining strength. His torture chambers and the battlefield are scenes of countless criminal acts. Will these crimes ever come to trial, at the International Criminal Court, for example?