evidence: In addition, the two sides agreed to increase cooperation in civilian nuclear energy technology and construction and other areas of advanced technology, from aerospace and satellite navigation systems to information technology, including AI. The joint statement also references plans for joint development of Heixiazi or Bolshoy Ussuriysky Island near Khabarovsk, control over which has been a periodic source of tension between the two countries despite a 2005 border demarcation agreement. It envisions a greater role for China in shipping and the development of logistics infrastructure in the Arctic where Russia maintains a substantial military presence and has expansive claims. On the military front, the two sides agreed to enlarge the scale of joint military training activities and increase the frequency of joint maritime and air patrols.