I have a few questions about the Naruto Shippuuden Movie 3: Inheritors of the Will of Fire?

(I watched it in japanese with japanese subtitles because there are no english subs out yet.) 1. Why was Gaara attacking Naruto? 2. Was the Sunagakure in "war" with Kohonagakure? (the scene where they were over that cliff) And in the Movie, were they enemies, hence the pre-battle between then before... show more (I watched it in japanese with japanese subtitles because there are no english subs out yet.)

1. Why was Gaara attacking Naruto?
2. Was the Sunagakure in "war" with Kohonagakure? (the scene where they were over that cliff) And in the Movie, were they enemies, hence the pre-battle between then before Jiraiya came in?
3. What made Sakura let Naruto out of his cage?
4. Why was Shikamaru and the other kohona folk trying to stop Naruto from going after Kakashi?
5. Why was Kakashi possessed? Was it just by random or did it have a purpose?

It would be appreciated if someone can answer these. Thank you!
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