Ankara’s moves in the Eastern Mediterranean, while very risky, have partly vindicated President Recep Tayyip Erdoğan. At a time when his regime is faced with serious challenges at home, his Mediterranean adventures have been good for Turkey at the regional level. Other powers will have to consider how to respond to Turkey’s moves. Washington’s lukewarm support for the trilateral partnership of Israel, Cyprus, and Greece, for example, has not met the high expectations of those countries, which continue to function as a pillar of stability in the Basin.