The term “Lone Actor” has been applied to a variety of violent individuals who are thought to act out of ideological motivations using terrorist tactics.

Bas Rietjens and his colleagues researched the Russia-Ukraine war, exploring this multitude of facets and their interconnections.

Current clients

During times of domestic turmoil, the use of force abroad becomes an appealing strategy to US presidents in hopes of diverting attention away from internal conditions and toward a foreign policy success.

The Institute CADS adheres to and teaches an approach to research ethics and integrity that emphasizes the processual nature of informed consent, situational ethics, and the indispensability of continually updating the ethical tradition in international anthropology in all the work of its researchers…

This project involves research into the oeuvre of the Sundanese sculptor Iko, who has worked for the Catholic mission in Java and has carved sculptures for a chapel and church in Ganjuran. The images were designed by the Catholic layman Jos Schmutzer and are characterized by a fusion in style and symbolism…

Jan de Vetten brengt zijn promotieonderzoek ook uit in boekvorm. ‘In de ban van goed en fout’ beschrijft voor het eerst - op basis van archiefonderzoek en interviews - op samenhangende wijze de bestrijding van de CP en CD, en ook de reactie daarop van die partijen. Waarom werden ze zo fel werden bestreden?…

A common assumption in chemistry is that the coordination number of a catalyst's surface determines the reactivity of the reaction it catalyses. Strikingly, Leiden chemists have now proven that this is not true for nature’s most simple chemical reaction: the dissociation of hydrogen. The researchers…

With a MSc in Chemistry you are well prepared for a wide range of career opportunities. The chemical industry is one of the largest contributors to economic prosperity worldwide.

Metaphysics as Praxis: Rereading Dogen's Metaphysics Through Deleuzian Pragmatism and Pratimutpada

Of the 111 Spinoza Prizes that have been awarded since 1995, 28 have gone to researchers from Leiden University.

In de uitzending van Café Kockelmann op18 april werd aandacht besteed aan twee belangrijke politieke thema’s: het vertrek van Pieter Omtzigt na 21 jaar uit politiek Den Haag en de roerige totstandkoming van de voorjaarsnota. Wim Voermans, hoogleraar Staatsrecht, was te gast in de uitzending.

Reijer Passchier, hoogleraar digitalisering en de democratische rechtsstaat aan de OU en universitair docent staatsrecht in Leiden, sprak op 26 mei voor de Commissie Digitalisering van de Eerste Kamer, tijdens een deskundigenbijeenkomst over de weerbaarheid van de democratische rechtstaat in tijden…

Het demissionair kabinet houdt publiekelijk vol dat de klimaatdoelen voor 2030 een streefdoel zijn en geen harde juridisch afdwingbare verplichting. Ambtenaren van het Ministerie van Financiën waarschuwen voor aanzienlijke financiële risico’s als die doelen niet worden gehaald. Wim Voermans, hoogleraar…

Een orang-oetan lacht niet gauw hard om een video waarin een soortgenoot dat ook doet. Een peuter doet het meer dan een volwassene, een Japanner weer iets minder. Chris Riddell leerde uit zijn vele experimenten ook dat geduld loont. Hij promoveert 16 september.

Dat banken en de belastingdienst vanzelfsprekend voorrang hebben als schuldeiser bij faillissementen is achterhaald, concludeert Ruben van Uden, universitair docent en promovendus, in zijn proefschrift. Hij vertelt erover bij BNR: ‘Het is niet meer te rechtvaardigen.’

The Advisory Council on International Affairs (AIV) has issued an opinion on possibilities for reform within the European Union (EU) in the area of Common Foreign and Security Policy (CFSP), the EU budget, and protecting the rule of law.

Landen proberen steeds strengere maatregelen te nemen om minder aantrekkelijk te worden voor asielzoekers. Mark Klaassen, universitair docent vreemdelingenrecht, noemt het Europese asielbeleid in de Volkskrant ‘een race naar beneden.’

Leiden University will be conferring three honorary doctorates in its special anniversary year. They will be awarded to Eliot Higgins, truth finder and founder of Bellingcat, Bonnie Honig, expert in feminist theory and legal theory, and Kelly Chibale, professor of organic chemistry, who works on prevention…

De roep om regie op Digitalisering en kunstmatige intelligentie wordt steeds luider. Reijer Passchier, universitair docent staatsrecht en hoogleraar digitalisering en de democratische rechtsstaat, stelt in Trouw dat dit belangrijke thema nu tussen ‘wal en schip dreigt te vallen, omdat niemand in Den…

Veel overheidsorganisaties hebben nog te weinig kennis van de Wet open overheid (Woo), ‘wat zorgt voor frustratie bij verzoekers en onzekerheid bij derden’, zegt Annemarie Drahmann, universitair hoofddocent Bestuursrecht en Woo-expert in iBestuur.

This subproject of 'From Homo Economicus to Political Animal' will be on ancient analogues for modern-day “ersatz economics”, the economics of the “man in the street”.

Here we will include all relevant publications from UNESCO relating to developments in AI ethics.

On November 22nd 2017 eLaw co-organized with partners of the e-SIDES project a workshop on the ethical, legal and socio-economic implications of big data.

The ambition of the Medical Systems Biophysics and Bioengineering group led by Alireza Mashaghi is to develop and use physics and engineering concepts and tools for pathophysiology, diagnostics and therapy.

The indane (2,3-dihydro-1H-indene) ring system is an attractive scaffold for biologically active compounds due to the combination of aromatic and aliphatic properties fused together in one rigid system.

Promotor: J.G.E.M. Fraaije, Co-Promotor: A. Kros

This book explores how physicists, astronomers, chemists, and historians in the late nineteenth and early twentieth centuries employed ‘epistemic virtues’ such as accuracy, objectivity, and intellectual courage. In doing so, it takes the first step in providing an integrated history of the sciences…

Neurodegenerative diseases pose a large medical and societal challenge. The etiology of these diseases is still poorly understood, which makes drug discovery for these diseases difficult.

Promoter: J.G.E.M.Fraaije, Co-promotor: A. Kros

The growing demand of energy indicates that global energy resources in the form of fossil fuels will not be sufficient in the future. In order to solve potential future energy problems development of a sustainable hydrogen economy is highly desirable.

Macromolecular Biochemistry is a section of the Leiden Institute of Chemistry at Leiden University, comprising the PIs Marcellus Ubbink, Remus Dame, Lars Jeuken, Anne Wentink, Anjali Pandit, René Olsthoorn, Alia Matysik, Sebastian Geibel and Steffen Brünle.

The Public Policy and Innovation department of the Institute of Public Administration focuses on shaping, implementing, and evaluating policy through innovative approaches. Our goal is to tackle complex societal challenges by exploring technological advancements and creative policy tools.

Thanks to its early civilisation and continuous mix of influences, the Muslim world has a rich and varied culture. The study of material culture, books, stories, films and increasingly television series teaches us about the structure of modern-day Muslim societies.

By carrying out fundamental research and providing excellent education, universities become a breeding ground for innovation and entrepreneurship.

This subproject of 'From Homo Economicus to Political Animal' analyzes Greek economic thinking in late 5th- and 4th-century philosophical circles.

The programme consists of 60 EC, to be completed in one year.

On 16 December 2019, Jan-Harm de Villiers defended his thesis 'The Anthropomorphic Hegemony of Subjectivity: Critical Reflections on Law and the Question of the Animal'. The doctoral research was supervised by Prof. P. Cliteur.

Drawing on the analogical lessons of the Great War, this article uses applied history to analyze how the four parallels discerned can help us make sense of contemporary Sino-American rivalry

This article describes the phenomenon of firearms violence and the importance of including non-lethal firearms violence in understanding this phenomenon.

Since its beginnings, Leiden University has been home to scholars with a broad and diverse expertise in the histories, languages, literatures and material cultures relevant to the study of Jews and Judaism from antiquity to modern times.

This omnibus brings together some old and some recent works by Jos Gommans on the warhorse and its impact on medieval and early modern state-formation in South Asia.

Cultural biographies of persons, objects and 'natural' places in the Bronze Age of the Southern Netherlands, c. 2300-600 BC.

On the occasion of the 80th anniversary of the magna carta of civil aviation, the Convention on International Civil Aviation (Chicago Convention 1944), Professor Steven Truxal has written a leading piece for the European Civil Aviation Conference: The Chicago system: a steadfast legal blueprint for…

Why is there no Northeast Asian security architecture? Assessing the strategic impediments to a stable East Asia. In this article, published in 'The Pacific Review', the authors Wang (Peking University) en Stevens (Leiden University) discuss the reasons why.