In this course, we will focus on the fascinating history of the Arabic Medieval World. We will take you on a journey through the Middle Ages. All along, we will present you with historiographical debates and dilemmas and travel back and forth in time explaining to you how events of the past affected…

Conceptualizing ceasefires as bargaining instruments challenges established ideas about the processes that lead up to conflict settlement, and about war re-emergence, with important implications for our understanding of war and peace.

This seminal volume covers the entire global history of urbanization since the rise of cities in Mesopotamia in the 6th millennium BC. Leiden historians Wim Blockmans, Leonard Blussé, Luuk de Ligt and Leo Lucassen contributed survey and thematic chapters.

Adopting a largely chronological approach, Gerrits links the historiography of post-war Europe and the major theoretical approaches to nationalism with analysis of key historical developments and events.

In an essay published in three prominent European newspapers, Professor Luuk van Middelaar takes a close look at Europe’s role in the Russian invasion of Ukraine. ‘Europe shows plenty of political energy, but what is still lacking is strategic cool-headedness, in facing a nuclear power.’

Over the last three decades, the discovery of exoplanets has revealed the boundless variety of worlds beyond our own Solar System⁠. Majority of planetary systems contain short-period planets that are larger than Earth but smaller than Neptune⁠.

Tensions ran high last week after China published a list on Wednesday of $50 billion in American products that would be hit by tariffs; a direct response to the United States' decision to implement $50 billion of tariffs on Chinese products. Could this be the start of a new trade war? And if so, what…

French is a global language. It is spoken on every continent and serves as an official language for many international organisations (NATO, UN, WHO). In this minor, you improve your language skills, study French from a linguistic perspective, and immerse yourself in the rich global Francophone culture…

One of the three long-term research interests of our group concerns the Transformation of the Roman World (c AD 450-900).

Social Information Processing in Children with and without Hearing Loss

According to Russian propaganda Ukrainians are Nazis and people from the West are Satanists. Egbert Fortuin thinks we should take this propaganda seriously.

In this PhD project, we focus on improving the effectiveness and efficiency of LMs with narrative data.

Dividing Worlds: Tsunamis, Seawalls, and Ontological Politics in Northeast Japan

Addressing the core novel objective of scalably assessing the impact of possible interventions through counterfactual prediction based on spatio-temporal data.

A remarkable population of short period transiting rocky exoplanets with equilibrium temperatures on the order of 2,000 K has recently been discovered.

When Russia invaded Ukraine at the end of February, normal life there came to a halt. To ensure that affected students and researchers can continue their studies and work, professor Ellen Rutten (UvA) and assistant professor Dorine Schellens (Leiden) set up an international mentor network.

A project aimed at understanding the complicated process of religious transformation in one of the centres of the early Muslim world.

Simon Willmetts provides evidence for systematic policy of direct collussion between the TIme Inc. media empire and U.S. Central Intelligence Agency.

If we want to solve global problems, we need to know about both the theory and the practice. How does the international community make decisions about military intervention, for instance? Why is it such a complex process? Professor Herman Schaper has represented the Netherlands at the United Nations…

Claire Vergerio, political scientist at Leiden University, has been awarded a VENI grant by Dutch research organisation NWO. This will allow her to conduct an in-depth analysis of the legal rights and duties of non-state actors involved in warfare. The aim is to tackle some persistent blindspots in…

The war in Ukraine has lasted almost two weeks now. What does Putin expect to achieve with his invasion and how big is the chance that the West will get involved? We phoned André Gerrits, professor and expert on Russia.

On the 6th of March 2023, Santino Regilme presented his work-in-progress titled 'Global Drug Wars: Contested Normative Orders of Peace, Security, and Human Rights'. If the battle against illegal drugs is construed as a war, how is victory in such a war defined and constructed? If the oppositional…

Whereas when we started the first Project the chief aim was pure research, to find out more about the past in a region, now we see that the countries of Europe are faced with the great problem that there are far too many archaeological sites for them to deal with by excavation, but yet some kind of…

On the 23rd of June Arianna Sacco successfully defended a doctoral thesis and graduated.

Denying war crimes and genocide is prohibited by law in the Netherlands. Minimising international crimes can also have far-reaching consequences, warns Marloes van Noorloos, Professor of Criminal Law and Criminal Procedure, in Trouw newspaper.

On 27 september historian Adam Zamoyski held a captivating lecture on his new book Napoleon: the Man behind the Myth. During this lecture, which was an initiative by Polen in Beeld and the Central and Eastern European Studies Center, Zamoyski answered the question: ‘what were the Napoleonic Wars really…

This PhD project investigates how grammatical features and lexical elaboration in Fulfulde Juguureere reflect aspects of cattle culture.

Political scientist Corinna Jentzsch (Leiden University) explains why Mozambique is not (yet) a success story.

This collection includes six short policy-focused contributions exploring how legislation and policy on counter cyber terrorism unfold at the national level in the United States, the United Kingdom, China, Russia, France, and at the regional level of the European Union.

New insights for policy promoting peace and security in Europe and the world.

In a podcast episode of 'The Dissenter' Eric Storm talks about his book 'Nationalism: A World History'.

This volume of Analecta Praehistorica Leidensia focuses on how local communities in prehistory define themselves in relation to a bigger social world.

Security and safety challenges rank among the most pressing issues of modern times. Challenges such as cyber-crime, terrorism, and environmental disasters impact the lives of millions across the globe. The course will introduce you to this broad theme in an increasingly complex world.

Hegemony and World Order explores a key question for our tumultuous times of multiple global crises.

WORLDING AMERICA researches how ‘play’ has been a key force in the past and present process of creating America as a coherent and hegemonic ‘world,’ from 1503 to the present.

This thesis, conducted in the framework of ERC Starting grant project BABYLON (PI: Caroline Waerzeggers), presents an investigation into Babylonian society, focusing on the city of Borsippa during Neo-Babylonian and early Persian rule (c. 620-484 BCE).

The International Course on Water Use and Management in Cagayan Valley The Philippines (2011-2015)

This book asks what it means to think globally about world politics. In an attempt to contextualise the recent ‘globalising turn’ in International Relations (IR), it takes stock of more than 30 years of efforts at addressing IR’s Eurocentric limitations, and explores what ‘thinking globally’ means in…

Courts that adjudicate war crimes or other crimes against humanity are increasingly taking regional norms and cultural values into consideration. PhD candidate Seun Bakare examined whether this could also be an asset in cooperation with the International Criminal Court (ICC).

Sandy Overgaauw has been awarded a 25,000 euro grant from the LUF for her research into PTSD in Syrian refugee children in the Netherlands. The research should lead to a screening method that can be used to determine which children are at higher risk of developing posttraumatic stress disorder (PTSD…

The Second World War took the lives of at least 663 students, staff and alumni of Leiden University. They were killed in raids, deported to concentration camps or, out of desperation, took their own lives.

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.