On April 26, in Doha, Deputy Foreign Minister of the Republic of Armenia Vahan Kostanyan had a meeting with Mohammed bin Abdulaziz Al-Khulaifi, the Minister of State at the Ministry of Foreign Affairs of the State of Qatar. 

On April 25, Deputy Foreign Minister of Armenia Vahan Kostanyan received the delegation led by Muhammad Akram Al-Ajlani, the Deputy Speaker of the Syrian People's Assembly. The delegation arrived in Armenia to participate in the event commemorating t

On April 15, Deputy Minister of Foreign Affairs of Armenia Vahan Kostanyan received Shoayb Casoo, the Ambassador of the Republic of South Africa to the Republic of Armenia (residence in Kiev), on the occasion of handing over the copy of credentials.

On April 15, the Deputy Minister of Foreign Affairs of Armenia Vahan Kostanyan had a meeting with the newly appointed UN Permanent Coordinator in Armenia, Francoise Jacob, on the occasion of presenting copies of her credentials.

On March 18, Deputy Foreign Minister of Armenia Vahan Kostanyan received Kate Newton, the Deputy Regional Director of the United Nations World Food Program (WFP) for the Middle East, North Africa and Eastern Europe. 

On March 13-14, in Geneva, Deputy Foreign Minister of Armenia Vahan Kostanyan participated and delivered remarks at the UNECE Regional Forum on Sustainable Development Goals.

On March 13, on the margins of the SDG Regional Forum organized by the UN Economic Commission for Europe, Deputy Foreign Minister of Armenia Vahan Kostanyan had a meeting with Tatiana Molcean, UN Under Secretary-General, UNECE Executive Secretary.

On March 9, In Tehran, regular political consultations between the Foreign Ministries of the Republic of Armenia and the Islamic Republic of Iran were held. Delegations were headed by Deputy Foreign Minister of Armenia Vahan Kostanyan and Ali Bagheri

On February 20-21, in Bangkok, the delegation led by Deputy Foreign Minister of the Republic of Armenia Vahan Kostanyan participated in the 11th Asia-Pacific Forum on Sustainable Development (APFSD).

On February 14, within the framework of the 18th session of the Armenian-Iranian intergovernmental joint commission, Deputy Foreign Minister of Armenia Vahan Kostanyan had meetings with Mehdi Safari and Ali Bagher Kani, Deputy Foreign Ministers of th