>>212477388 (OP)Did you know that the CIA publishes regularly updated demographic information about every country in the world, and has been doing so since the 1970s? Every politically connected and military minded person knows this. It's one of the most important publicly available resources on the planet. It's available in print, and online.
https://en.wikipedia.org/wiki/The_World_Factbook
This isn't about an old man not knowing some obscure factoid about a random country, but willfull ignorance on the senator's part.
This is on the same level as not knowing how much money it's going to cost to build something while being the head of the project. If you want to stomp a country militarily, you should at the very least know how many people might get in your way.