Each state chooses its security system, Armenian Prime Minister Serge Sargsyan said when commenting on the Armenia-NATO relations. "I rate our security system as good. Armenia is a member of the CSTO; Russia is our strategic partner. Communications come forth as a priority issue in case of NATO's entering the region. I won't say they are ideal today and will wear out tomorrow. I am hopeful that Armenia and Russia will find a way out to prevent any influence on our security," he said, Nezavisimaya Gazeta reports.