I just finished Giruvegan and after watching the series of long scenes after obtaining the Esper, I'm left with some questions:

1. When the ghost-like god (forgot their names... starts with an "O") tells Ashe that the Dynast-King used the Treaty Sword long ago to break the Sun Cryst into 3 shards, would those shards happen to be the Dawn, Dusk, and Midlight Shards? If so, why was this done?

2. What was the whole point of getting the Sword of Kings if the Treaty Blade seems to do the exact same thing? I really don't understand the difference between those swords and why the Sun Cryst is so important.

3. And last but not least, I'm some what confused about Dr. Cid's intentions. Yeah, I get the whole part about Cid luring them into Giruvegan so that Ashe could take the bait, but why? I don't see why Cid would lead the opposing enemy into such a Mist-flourishing area where there's all sorts of power. Does he want Ashe and the others to fight back?

Any and all help would be appreciated! Thanks!