Whosoever replaces the present incumbent is on prevogatives of the Govt.But if persons like Vinod Sharma(who forgot to carry his I/Card in recent Asssembly Elections i H.P. leading to unsavory situation ) and S.M. Krishana (who proved a failure in Karnatak-as proved by verdict) will be a mockery of the post considered to be crucial) A knowledgeable and a cute bureacrate is needed for this covetal post. Why not person like M.K.Narayan -the present National Security Advisor who has the necessary expertise and capability to deal with such powerful ally. But my suggetion will go in vain, as narrow political will prevail.
