Omg... Part 1 events? Really? How desperate are you?
Gaara is the Kage now, so Konoha and Sand's alliance could have never been better, plus only Temari and Kankuro went with him to the Iron Lands. And this goes for the other 3 villages, only went 3 shinobis including the Kage.
One shinobi from the Rock Village suggested her Kage to kill both Naruto and Bee, for both ruining Tobi's plans and weakening the villages, suggestion the Tsuchikage discarded easily.
So your premises are:
- Sand invaded Konoha in Part 1 (conviniently avoiding the fact they became allies, and even supported Konoha in the Bring Back Sasuke Mission. Gaara, Naruto's friend became Kage, and was rescued by Konoha team. So the friendship between the villages couldn't be any better)
- One former fodder Shinobi, suggested her Kage to kill both Naruto and Bee.
Your conclusion is that in a neutral country, which only a few people from other village went, and the villages had just made a deal and became allies, in a scenario where Kiba, Sai and Lee were far away from the others Kages and their bodyguards, you think anyone could have killed them just because they were unconscious and they came from a different village.
I can't understand how you think that way with those pathetic premises....