In this essay, which was commissioned by the NCTV to mark the occasion of the conference “Threat Barometer. Ten years of Terrorist Threat Assessments for the Netherlands 2005-2015”, we address this and other aspects of the DTN and consider how this instrument has developed over the past decade. We also analyse the threat assessment itself: what were the key issues and trends in the area of terrorism? We then turn to the context in which the DTN is published. In the conclusions we set out the nature, form and content of the DTN. We also reflect on the future of the DTN. However this essay begins with an answer to the question of why we actually have a DTN and how this threat assessment came about. Security and Global Affair
