ANKARA, Turkey (AP) — Greek Prime Minister Alexis Tsipras is making a two-day visit to NATO ally Turkey for talks with President Recep Tayyip Erdogan on an array of issues that have strained the relationship between their two countries.

The leaders are expected to discuss territorial disputes in the Aegean Sea and gas exploration in the eastern Mediterranean.

Also expected to be on the agenda is a possible new peace effort for divided Cyprus.

Turkey is also likely to bring up the case of eight Turkish officers who fled to Greece following a failed coup in 2016.

On Wednesday, the Greek prime minister will visit an Orthodox theological seminary on an island off Istanbul. The seminary has been closed since 1971, despite calls on the Turkish government to reopen it.