[quote=@Prosecco]
[@BladeSS4] I'm sorry to point out but isn't explosive clay part of Deidara's Kinjutsu? It seems kind of weird that the village would allow a chunin to access one of its forbidden techniques.
[/quote]

The Explosive clay was a kinjutsu that Deidara stole from Iwagakure.  I don't know if it is weird if the village would let someone with the explosion release use the forbidden technique though.  I just think it would be neat though to have someone in this war who can use exploding mines.