This book explores the impact of the Russian-Ukrainian war on the geopolitics of the eastern Mediterranean. The European Union's efforts to dispense with Russian gas and secure gas supplies from diverse sources including the Eastern Mediterranean have motivated Israel to step up its efforts to become a major regional player in the energy sector and a major gas supplier to the Eastern Mediterranean and European markets. The book reveals that Israel’s efforts to become a major regional energy player and develop gas relations with its neighbors are driven not only by economic benefits and regional cooperation but are primarily linked to Israel’s security and interests which is likely to cause increased geopolitical tensions and instability in the region.