title: Hybrid War Rusia dalam Mempertahankan Pengaruh atas Ukraina Sebagai Zona Penyanggah 2013-2015
abstract: This research aims to analyze Russian Strategy on maintaining its influence over Ukraine as a buffer zone. NATO expansion to Eastern Europe has caused Russia to feel insecure with numerous Eastern European states that are close to Russian border joining them. Ukraine is one of the Eastern European state that is close to Russian border. That reality has forced Russia to maintain its influence over Ukraine to be neutral as a buffer zone state in Russian side. Crisis in Ukraine which erupted in 201