On November 4-5, 2019 an international conference entitled "Communities in the Middle East" was held at the Ambrosian Academy in Milan, Italy.

The Institute of History, NAS of RA at the conference was presented by Elizabeth Tajiryan, the research at the Department of History of the Diaspora, who delivered a presentation on Gregorio Aghdollo (1707-1789). The title of her presentation was “Gregorio Aghdollo (1707-1789), arménien et collectionneur à Venise et Florence dans la tradition de la grande diaspora arménienn”