HOW many countries?
"I used to write security tools for a global entity that ran a secure isolated network spanning 400+ countries"
Quite impressive given that there are less than half that many in reality. From http://www.worldatlas.com/nations.htm :
"Depending upon the source you acknowledge, there may be 189, 191, 192, 193, 194, 195 or 196 independent countries in existence upon our globe today."