India wants the preamble to clearly link the treaty to time-bound nuclear disarmament
While the treaty bans all types of nuclear explosions, it fails to comprehensively define what constitutes an explosion. India argued that this allows the nuclear powers to conduct sub-critical tests and computer simulations for the development of nuclear weapons.
India finds the verification regime of the CTBT, particularly the on-site inspections, extremely intrusive
Under Article XIV, the entry into force clause, all contents which have nuclear power and research reactors have to be signatories for the treaty to come into force. India has argued this is a way of forcing it to be party to the treaty.