The fellowship raises the competence of the researcher by deepening the knowledge of quantitative methods - especially the analysis of panel data. Throughout the project data will be collected for two publications as well. The first study aims to examine the factors that determine the level of military spending in the EU Member States over time. The purpose of the second one is to examine whether and how labor market flexibility affects countries' decisions to adopt a particular exchange rate regime. The aim of the traineeship is to deepen the relevant knowledge of econometrics and fill the gap in the literature of the field.