Turkey is determined to ensure it is not left out of plans to exploit East Mediterranean natural gas discoveries. Turkish gunboats, drillships and seismic vessels are more active in the region than ever. What will the endgame look like?

Stability in the eastern Mediterranean and Cyprus is only possible if Turkey’s and Northern Cyprus’ rights and interests are taken into account,” Turkish President Recep Tayyip Erdogan said on 6 August. The following day his Energy Minister...