Will Greece and Turkey fight over energy? Inside Story

Concerns are growing there could be a conflict between Turkey and Greece in the Eastern Mediterranean.
The two countries have been disputing maritime boundaries and offshore energy rights.
On Tuesday, they sent warships to the waters in a show of force.
Turkey’s vessel Oruc Reis is conducting research – and Greece says it’s above its continental shelf.
They have both announced military exercises within a broad area between Crete and Cyprus.
But they have also signalled readiness for dialogue as Germany tries to mediate between the NATO allies.
Could this dispute escalate?
And what would it take to defuse it?