[zephyr325]

Originally Posted by HailEmperor

Regarding my question, I meant how many countries are there that have been listed or mentioned in the LN who have IS or have been said/hinted to have IS, not from a guess. There are more than the ones that I listed, no?

Spoiler for Answers:

Aside from those you have listed, the actual names for countries are not specified in LN.

And the situation about Isreal is kinda vague.

Italy - mentioned by video game (Tempest serise IS) - Plausible since the game data is based on actual 2nd Mondo Grosso Tournament.
Isreal - Aside from Siverior Gospel being US/Isreal joint development, no mentioning of purely domestic IS.

However, it talks about a video game called Infinite Stratos - Vast Sky - a sort of video game of fighting game genre, based on Mondo Grosso
(according to LN contents, this game is internationally popular selling over a million copies within a month of release)

It is specified that the game data is based on 2nd Mondo Grosso (That's about when Ichika was kidnnaped, so that's quite a while ago) and there are 21 participants, from 21 nations.
It doesn't say anything about the name of countries other than England and Italia, though.