The importance and explosive nature of these deliberations require a safe container. Safe for the participants. Private and secret from those not involved in the exploration and creation of requirements (Constitution of New China and Bill of Rights)
While this offer is being developed in secrete the CIA and FBI are brought in at their highest levels to help contain the access to the process and deal with any leaks.
When it is decided to move forward then a TV series is released to make sense of this--in a fictional story line. (following a movie that brings the reality for nuclear war home)