The article describes development and technical modernization of the Polish Armed Forces after 2014. It explores the linkage between development and modernization efforts and evolving military threat posed by Russia. Discussion on evolution of military threat posed by Russia constitutes a starting point for further analyses. Then, a comparative analysis of development and technical modernization plans adopted for Polish Armed Forces after 2014 and tangible results of modernization efforts undertaken during this period is presented. The article concludes with predictions on sustainability of development and modernization of the Polish Armed Forces.