In this article, Kuipers and Timmermans analyze the first lady's relationship with policy problems in the period 1945-2013.

De rol van de Raad van State staat opnieuw ter discussie. Kritiek uit de politiek botst met staatsrechtelijke analyses, terwijl experts waarschuwen voor aantasting van het gezag van het instituut. Staatsrechtgeleerde, Wim Voermans, duidt de zaak in een artikel van JAS nieuws.

On 25 September 2019, Luuk Esser defended his thesis 'De strafbaarstelling van mensenhandel ontrafeld'. The doctoral research was supervised by Prof. C.P.M. Cleiren and Prof. J.M. ten Voorde.

On 23 oktober 2018, Elsemieke Daalder defended her doctoral thesis 'De rechtspraakverzamelingen van Julius Paulus'. The doctoral research was supervised by prof. mr. W.J. Zwalve and Prof. mr. E. Koops.

The Netherlands generally performs above average in the protection of personal data, according to research carried out at Leiden University. Germany is the leading country, while countries such as Italy and Romania are lagging behind.

How can we understand the implementation of EU policy and what challenges are involved?

Organisations such as the EU are of enormous benefit to the member states, but the inhabitants of the member states are often unaware of this. Leiden researchers investigate whether international organisations such as the EU or ASEAN are able to influence global politics.

Met AI kunnen nieuwsredacties razendsnel beelden genereren — maar tegen welke prijs? Dit onderzoeksrapport opgesteld door prof. dr. Jaap de Jong, dr. Astrid Vandendaele, Maartje van der Woude en Stef Arends (Universiteit Leiden), baseert zich op 59 interviews met beeldmakers, redacteurs en experts uit…

This book reveals how one publishing firm's editorial strategy helped to legitimate European colonialism in the early modern era.

The European Council and the European Commission have a similar role in agenda setting. Both place issues on the EU agenda. However, these institutions have distinct designs. They have different political attributes (the European Council has considerably more political authority) and information-processing…

The Centre for the History of European Integration (CHEI) is an initiative that brings together scholars working on European integration, broadly conceived, from a historical perspective.

This commentary on the United Nations Convention Against Corruption discusses each provision of the treaty, traces the provisions’ drafting history, and explores their implementation in domestic legal systems.

This dissertation investigates Extended Lexical Units (ELUs), elements that are bigger than just one word and which are stored in the Lexicon.

What political factors affect the speed or duration of EU legislative decision-making?

Set up in 1991, this unique project aims to identify and describe the common lexical heritage of the most important Indo-European languages and language branches. The project has thus far resulted in twelve volumes published as The Leiden Indo-European Etymological Dictionary Series (Brill, Leiden).

International Relations and European Politics is one of the three organisational clusters of the Institute of Political Science.

On 19 February 2019, Mirjam Sombroek-van Doorm defended her thesis 'Medisch beroepsgeheim en de zorgplicht van de arts bij kindermishandeling in de rechtsverhouding tussen arts, kind en ouders'. The doctoral research was supervised by Prof. dr. A.G. Castermans en Prof. mr. C.J.J.M. Stolker.

Our research deals with the deep history of Europe and Eurasia, from the inception of farming up until the beginning of the Roman Period. This was a period in which key developments took place that had a profound impact on European landscapes and society until the present day. Our research and teaching…

Does a shared idea of the ‘public servant’ exist in Europe? Sager, Overeem, and others explore.

Het is een wijdverbreid idee dat (post-)middeleeuwse steden een sterfteoverschot hadden en zij slechts in leven konden blijven door de toestroom van migranten; een fenomeen dat bekend staat als het ‘urban graveyard’-effect. Over details valt te twisten, maar duidelijk is dat de stad en de dood dichter…

The new Master’s programme in Public Sector Economics (MSc Economics) prepares you to become the policy economist of the future. The programme enables you to bridge the gap between economic theories, scientific methods, the functioning of Dutch institutions and policy processes, as well as current societal…

Willem Peene defended his thesis on 12 January 2017

Onderzoek van de onderzoeksgroep 'War, Peace and Justice'

Leiden’s Institute for History has an exceptionally strong expertise in premodern European history in its global context, with specialists whose interests cover virtually the whole continent. We have a strong track record in leading larger research teams and work together with colleagues across Europe…

On 17 October 2018, Thomas Sanders defended his doctoral thesis 'Invordering door de overheid: de invordering van geldschulden uit herstelsancties onder de Awb'. The doctoral research was supervised by Prof. mr. T. Barkhuysen and Prof. mr. M.W. Scheltema.

Advanced Summer School on the European Union and the United Nations in The Hague. Explore global governance, EU–UN cooperation, simulations and institutional visits. Apply by 22 May 2026.

This publication is written in Dutch. Please consult the Dutch page for more information.

This paper, written by Silvia D'Amato & Andrea Terlizzi, investigates the extent to which the European Union is strategically engaging against terrorism.