Although NATO allies, neighbors Greece and Turkey are divided by a series of decades-old issues, including territorial disputes in the Aegean Sea, and have come to the brink of war three times since the 1970s, including once over drilling rights in the Aegean.
Greece, Cyprus and Egypt also criticized the Border Agreement, calling it a grave violation of worldwide law. "We could see some allies want to volunteer troops", Esper said, without suggesting any new contribution was imminent.
Greece said on Wednesday it opposed an accord reached by Turkey and Libya to define their maritime boundaries, but said it and Ankara - both members of North Atlantic Treaty Organisation - were committed to talks on confidence-building measures.
Des ultras des Girondins de Bordeaux stoppent la rencontre face à Nîmes
C'est inacceptable, ce n'est pas du tout l'image que l'on souhaite donner du foot à Bordeaux et partout en France. Après 15 minutes, les supporters sont revenus dans le virage, sous les applaudissements et la partie a repris.
The two countries also signed a security cooperation agreement; or more specifically, a MoU. Lawmakers there denounced the deals as a "flagrant breach" of Libya's security and sovereignty, saying they grant Turkey the right to use Libyan airspace and waters as well as build military bases on Libyan soil.
While details of the agreement with the Tripoli-based government of Fayed al-Sarraj have not been released publicly, the move is being viewed as an attempt by Ankara to claim rights over a large area of the Eastern Mediterranean, including parts that fall within Greece's maritime jurisdiction, a issue that the Greek government intends to bring up as major debate point in London.
"Our recourse to The Hague has that very goal", he told journalists in Nicosia.
"Libya is a sovereign, independent state and the Libyan people give utmost importance to their dignity", he said.
Fears grow about Sydney after Australia fires merge into giant blaze
Some firefighters have expressed concern that volunteer numbers might not be enough and that there are inadequate water supplies. The blaze throughout 300,000 hectares (1,150 sq m) is simply an hour's drive from the nation's most-populous metropolis.
Greece has also threatened to expel the Libyan ambassador unless details of the agreement were provided.
European Union member Cyprus was divided in a Turkish invasion in 1974 after a brief Greek-inspired coup.
The move has been planned after Turkey announced that it had reached an agreement with Libya to delineate its maritime economic interests.
Rep. Dean on Trump's 'extraordinary obstruction' and the case for impeachment
Will the US President be impeached? Trump says that in this case, there's been "no crime" - not even a "tiny crime". White House press secretary Stephanie Grisham called the remarks a "classless move by a Democratic 'witness'".