A new report highlights extensive security cooperation among China, Russia, Iran and North Korea and warns it could create a “simultaneity problem” for the United States. According to the coverage, the book documents 616 instances of security cooperation among the four countries, suggesting their coordination occurs across multiple areas rather than as isolated incidents. The report frames this pattern as potentially escalating challenges at the same time, which it argues could strain U.S. planning and response capabilities. The articles do not provide further detail on the specific categories of cooperation counted, the methodology used to compile the figures, or whether the cooperation reflects formal alliances, operational coordination, or broader security alignment. They also do not offer direct statements from the governments involved. Overall, the shared focus across outlets is the scale of reported cooperation—616 instances—paired with a warning that simultaneous developments among these states could complicate U.S. security priorities.