RA Defense Minister Suren Papikyan received the delegation led by CSTO General Secretary Imangali Tasmagambetov, who arrived in Armenia on a working visit. "Opinions were exchanged on several international and regional security issues, including the Armenian-Azerbaijani border and the military-political situation around Armenia. In particular, speaking about the border situation, I presented the long-standing problems and the expectations of the RA Ministry of Defense regarding the implementation of CSTO collective defense mechanisms," Papikyan informed on his Facebook page.