For decades, knowledge of North Korea's military capabilities was the exclusive province of intelligence agencies with access to classified satellite imagery, signals intelligence, and human sources. The democratization of commercial satellite technology has fundamentally changed this equation, creating a new class of open-source intelligence (OSINT) analysts who can independently verify, challenge, and supplement government assessments.
The Commercial Satellite Revolution
The resolution of commercially available satellite imagery has improved dramatically, from approximately 50-centimeter resolution in the early 2010s to 30 centimeters or better today. At this resolution, individual vehicles, construction equipment, and even people can be identified. More importantly, the revisit rate, the frequency with which any given location on Earth is photographed, has decreased from weeks to hours, thanks to the proliferation of small satellite constellations.
For North Korea monitoring, this means that activities at known nuclear and missile facilities can be tracked in near-real-time. Construction of new buildings, movement of equipment, excavation of tunnels, and even the presence of vehicles associated with missile launches can be detected by civilian analysts working from laptops anywhere in the world.
Notable OSINT Discoveries
The track record of open-source intelligence on North Korea is impressive. Civilian analysts have identified previously unknown uranium enrichment facilities, detected preparations for nuclear tests before they occurred, tracked the construction of new submarine classes, and monitored changes in activity at launch sites that provided advance warning of missile tests.
Perhaps the most significant contribution has been in the area of sanctions enforcement. OSINT analysts have used ship tracking data, satellite imagery of port facilities, and social media analysis to document North Korean sanctions evasion in real-time, often providing evidence that governments were unable or unwilling to collect themselves.
The intelligence community sometimes views us as competitors, but we see ourselves as force multipliers. When a grad student in Monterey can spot the same things as a billion-dollar satellite, it changes the information dynamics in ways that ultimately serve transparency and accountability. -- OSINT analyst
Limitations and Ethics
OSINT has significant limitations. Satellite imagery cannot see inside buildings or underground. It cannot reveal intentions, only activities. And the interpretation of imagery requires expertise that many casual observers lack, leading to occasional false alarms and misidentifications. The ethical dimensions are equally complex: the publication of sensitive imagery can compromise intelligence sources and methods, and the line between legitimate analysis and targeting information is not always clear.
Jeffrey Lewis is a leading arms control expert and pioneer in the use of open-source intelligence for nonproliferation analysis.