Aide to the President of Azerbaijan, Head of the Foreign Policy Department of the Presidential Administration Hikmet Hajiyev wrote on his Twitter account about the involvement of Syrian Armenians in military operations in the Karabakh war."Illegal settlement is a war crime. Documents confiscated from the building used by the Armenian National Security Service show that Armenia continues its illegal settlement policy and uses Syrian Armenians as mercenaries. "Our appeals on illegal settlement have been ignored by the co-chairs for years," Hajiyev said on Twitter.