title: Proceedings Estonian Academy of Security Sciences, 19: Old and new threats – challenges for internal security
abstract: Foreword / Vladimir Sazonov, Kristina Saad ; Internal security in Poland after 2015. Threats and responses / Eugeniusz Cieślak, Zdzislaw Śliwa ; Competing strategic narratives and their reflections in practice: Russo-Estonian relations following the annexation of the Crimea / Viljar Veebel, Raul Markus, Liia Vihmand ; Using military concepts in civil administrative structures: the Estonian case / Diana Marnot ; Understanding the essence of ethnic conflict: a thematic literature review / Helina M