Greece and Turkey began talks on restoring relations during a meeting between the foreign ministers of the two respective countries on Monday, in an effort to end years of tensions. 

Monday's talks between Deputy Foreign Minister Konstantinos Fragogiannis of Greece and Turkish Counterpart Burak Akcapari of Turkey, in which experts from both countries also participated, had the main topic of finding areas where these two NATO countries can cooperate in economic matters. 

Tourism, energy, the environment and civil defence were expected to be on the agenda, according to sources within the Greek government. 

On Tuesday, the talks are expected to touch on more controversial topics, including sovereignty in the Aegean Sea and the Mediterranean Sea, as well as immigration. 

There was no expectation of specific results from the talks, Greek radio reported, citing sources within the government in Athens. 

Greek Prime Minister Kyriakos Mitsotakis and Turkish President Recep Tayyip Erdogan agreed to try to restore relations during a meeting on the sidelines of the United Nations General Assembly on September 20. 

This decision comes after many years of political tensions between the two countries. Turkey and Greece have major disagreements over the sovereignty of islands in the Aegean and the use of the region's processed materials, such as natural gas. 

If the parties reach an agreement, the two governments will meet on December 7 in the Greek port city of Thessaloniki.