Well I doubt that this sai or that BB are spies, I mean they have quite a big building with a big and clear mark of konoha(so I supose that is inside the hidden village). It would be ridiculous to have an spy organization on a building of that magnitude inside konoha(which is the best hidden village or seems like, because everybody wants to defeat 'em).

So making the point that they arent some foreign spies I come to think that they are truly konohas, somekind of powerful clan, or maybe part of the konoha council(those elders that talk to jiraya about the decision about he new hokage). They maybe found tsunade and his soft attitude with naruto dangerous for konoha, after all naruto is the kyubii wich almost destroyed the village and killed a lot of ninjas. Many ppl should be afraid of him or cautious. Maybe some konoha ppl with influence are affraid of naruto releasing the kyubii or want to prevent him to fall on enemy hands by any possible means(like killing him if necesary). So introducing some1 in his team to watch over him, with the strength enough to kill him if something goes wrong, seems logical.

This would be neat and very reasonable looking at overall history, maybe on this plot we can see that hokage is not like a god. As far as we have seen hokages seemed like all powerful leaders, but that doesnt make much sense, there are always powerful lobbies, or influence groups. This could be some intern political plot wich would be awesome for me.

Just wishfull thinking [img]i/expressions/face-icon-small-smile.gif[/img]