direct link to National Security & Nuclear Weapons in the 21st Century audio
1 hour 13 minutes
34.8 MB
From the Executive Summary:
During the Cold War, the greatest security concern of the United States was the military capabilities of the Soviet Union. Potential threats from China and regional states such as North Korea were considered to be lesser included cases that could be addressed by the capabilities deployed to counter the Soviet threat. The current global security environment is radically different. The primary national security challenge now facing the United States is the nexus of violent extremists and regional states of concern that have, or seek to attain, weapons of mass destruction (WMD).
On page 22 of this document, there is a table not included in the narration. It is shown here for reference purposes:

PDF (text) version of National Security and Nuclear Weapons in the 21st Century
National Security and Nuclear Weapons in the 21st Century
From the Executive Summary:
During the Cold War, the greatest security concern of the United States was the military capabilities of the Soviet Union. Potential threats from China and regional states such as North Korea were considered to be lesser included cases that could be addressed by the capabilities deployed to counter the Soviet threat. The current global security environment is radically different. The primary national security challenge now facing the United States is the nexus of violent extremists and regional states of concern that have, or seek to attain, weapons of mass destruction (WMD).
On page 22 of this document, there is a table not included in the narration. It is shown here for reference purposes:
PDF (text) version of National Security and Nuclear Weapons in the 21st Century