Who is responsible for providing standard separation between TCAS equipped aircraft that is responding to an RA and any other aircraft airspace terrain or obstruction?

When an RA is issued, pilots are expected to respond immediately to the RA unless doing so would jeopardize the safe operation of the flight. This means that aircraft will at times have to maneuver contrary to ATC instructions or disregard ATC instructions. In these cases, the controller is no longer responsible for separation of the aircraft involved in the RA until the conflict is terminated.