OSCE Chairman-in-Office, Swiss Vice President, and Head of the Swiss Federal Department of Foreign Affairs, Ignazio Cassis, on Thursday left unanswered Armenian News-NEWS.am's question regarding pushing for the release of Armenian hostages in Baku, the capital of Azerbaijan.

Cassis is in Armenia to attend the Leaders' Summit on Biodiversity to be held in Yerevan within the framework of 17th meeting of the Conference of the Parties (COP17) to the UN Convention on Biological Diversity.