This week, Russian Defense Minister Sergei Shoigu made the first visit by a Russian defense minister to North Korea since the fall of the Soviet Union. Kim Jong Un and Shoigu met in Pyongyang to discuss military issues and the regional security environment, and Shoigu accompanied Kim to a defense exhibition featuring North Korea's banned ballistic missiles. The visit is seen as a sign of the strengthening ties between North Korea, Russia, and China, and a reminder of the ongoing tensions between North Korea and the U.S. over North Korea's nuclear program.