Who among the following is the Chairman of the Steering Committee to oversee the functions of the National Authority Chemical Weapons Convention (CWC)?

The Cabinet Secretary serves as the Chairman of the Steering Committee overseeing the National Authority for the Chemical Weapons Convention, which implements India's obligations under the international treaty. The Cabinet Secretary, as the head of the civil services, is the appropriate official to coordinate inter-ministerial implementation of the CWC. The President, Prime Minister, and National Security Adviser have broader constitutional or security roles and don't directly oversee this specific committee.