At the invitation of the Erzurum Technical University and the Turkish Historical Society, Department Head of Presidential Library Nazim Mustafa (Nazim Mustafayev) took part in the International Symposium dedicated to the 500th anniversary of the Ottoman rule and the 100th anniversary of its liberation from the Russian-Armenian occupation held in Erzurum.  The symposium was attended by about 70 scientists from 4 countries. Nazim Mustafa lectured on "Activities of Armenian intelligence agencies against Turkey and Azerbaijan in 1918-1920" in symposium. After the symposium, Nazim Mustafa in his interview for Anadolu Agency spoke about the rescue mission of the Islamic Army of the Caucasus in 1918, underlining that the principle of "one nation, two states" between Turkey and Azerbaijan justified itself even 100 years ago in practical works.