It’s about Greater Sunrise. It was always about Greater Sunrise. The Timor Sea boundary agreement has now been signed in New York, but the key to the dispute -- the $50 billion Greater Sunrise liquid natural gas field -- remains unresolved.
Timor-Leste has argued for many years that the agreement which saw the joint exploitation of the Timor Sea’s oil resources was unfair and illegal under the UN Convention of the Law of the Sea (UNCLOS). It has made this argument based on the "median line" principle in which, under UNCLOS, the sea boundary between two countries should be drawn at the median point.