More than 10,000 personnel from 37 "friendly and allied countries" took part in concerted exercises held along the Aegean coast, the ministry said on Twitter, also sharing a video montage of various drills.
Turkish President Recep Tayyip Erdoğan, National Defense Minister Hulusi Akar, Vice President Fuat Oktay, Nationalist Movement Party (MHP) leader Devlet Bahçeli and other high-level officials attended the Observer Day on Thursday.