| title | ISBN-13 | year of publication |
|---|---|---|
| European Approaches to International Relations Theory: A House with Many Mansions | 978-0-415-33265-1 | 2004 |
| Fighting Terrorism and Drugs | 978-0-415-54351-4 | 2009 |
| Fighting Terrorism and Drugs: Europe and International Police Cooperation | 978-0-415-40892-9 | 2007 |
| Hindu-Muslim Relations: What Europe Might Learn from India | 978-0-8153-9683-3 | 2018 |
| The Future Is Not What It Used to Be: Climate Change and Energy Scarcity | 978-0-262-01924-8 | 2013 |