itachi would ahve captured naruto. hes brutal and sociopathic so yeah.
he had no problem helping to capture and murder the other jins. so he clearly doesnt care if akatsuki obtain nukes.
itachi was ready to have innocent people, even naruto, slaughtered if it meant sasuke got Mangekeyo.
He woudn't do anything,like he did nothing when Kisame hunted down Roshi (Goku's jinchuuriki)
except let it all happen which is as bad as doing it yourself.
Find an excuse. I don't think he would have let the nine tails fall into the Akastuki's hands. Too powerful
yet was fine with the eight tails falling.