The IANA Functions from ICANN (revised)
Update: The IANA Functions Infographic - ICANN: ICANN released a new IANA Functions Infographic (above) which explains how the core IANA functions allow users to access the Internet. According to ICANN the revised infographic incorporates feedback from the community.
Recommended reading: SAC067 Overview and History of the IANA Functions (pdf)
An August 15, 2014, report from the ICANN Security and Stability Advisory Committee (SSAC)
more news links below (on mobile go to web version link below)