I assume by "many countries" you mean the US and its allies? Is that it then? Your definition of "terrorist" is whoever the West designates a terrorist? Ergo Nelson Mandela was a terrorist.
Surprisingly there are several Arab countries, including the [Gulf Cooperation Council](https://en.wikipedia.org/wiki/Gulf_Cooperation_Council), and the UAE.
Yep, all western countries/entities, as expected.
It's expected, it's OK, but it just prevents discussion of certain topics.
Edit: Above is retracted - cjbprime found later information.
Many of the countries you mention consider the militia to be a terrorist organization, but not the political wing. I wonder whether the pagers were carried by both groups.
I suspect it's somewhat inconsistent but they are a big problem for many states who are looking at political and economical stability.
See here, even the US military can be labeled terrorists in the eyes of american people https://news.ycombinator.com/item?id=41578412