
Kyatai: yes, the main and only Eorzean deposit is in Thanalan. At least, it seems it's the only one that has been discovered as of time of speaking.
I think Ishgard is locked up in their own little holy war with dragons, currently, and the garleans had a very nasty battle against them (the dragons, I mean. There's a cutscene in the game and all). I'd say it's likely the Empire isn't focusing on Ishgard because they aren't particularly helping the rest of Eorzea and maybe because the dragons are actually a bigger problem.
Besides, I'm sure once Ishgard wins/stabilizes their war effort against the dragons, the Empire will lunge in and take advantage of their weakened state.
I think Ishgard is locked up in their own little holy war with dragons, currently, and the garleans had a very nasty battle against them (the dragons, I mean. There's a cutscene in the game and all). I'd say it's likely the Empire isn't focusing on Ishgard because they aren't particularly helping the rest of Eorzea and maybe because the dragons are actually a bigger problem.
Besides, I'm sure once Ishgard wins/stabilizes their war effort against the dragons, the Empire will lunge in and take advantage of their weakened state.