A maritime agreement struck up between Turkey and Libya, which secures Turkish rights over a portion of the eastern Mediterranean officially goes into effect Saturday with its publication in the state's Official Gazette.

On Nov. 27, Turkey and Libya's Tripoli-based Government of National Accord (GNA) signed the bilateral memorandum after a meeting between President Recep Tayyip Erdoğan and GNA head Fayez Al Sarraj, took place in Istanbul. The deal enables Turkey to secure its rights in the Mediterranean while preventing any fait accompli maneuvers by other regional states.

The memorandum asserts Turkey's rights in the Eastern Mediterranean in the face of unilateral drilling attempts by the Greek Cypriot administration, clarifying that the Turkish Republic of Northern Cyprus (TRNC) also has rights to resources in the area.

Fellow regional actor, Greece, did not welcome the deal and even regarded it as a violation of its own rights, though international law deems otherwise. Athens later said it would expel its Libyan envoy Mohamed Younis AB Menfi from the country in response.

Libya has remained dogged by turmoil since 2011 when a NATO-backed uprising led to the ousting from office and death of former president Moammar Gadhafi after more than four decades in power.

Since then, Libya's stark political divisions have yielded two rival seats of power, one in Tobruk and another in Tripoli, as well as in-fighting by a host of heavily-armed militia groups.

The military, pushed by Khalifa Haftar's army, has allied with a parallel eastern administration based in Benghazi, marking a dangerous escalation in a power struggle that has dragged on since the vacuum following Gadhafi's death emerged. Haftar is not recognized by the international community, as the elected parliament of the country is centered in Tripoli.