@CNN: Sen. John McCain is discontinuing treatment for brain cancer. Dr. Sanjay Gupta will be on Full Circle tonight to answer your questions. Join us on Facebook Watch: https://t.co/wlCpzO75Os https://t.co/zvmB0HJda2

@CNN: Sen. John McCain is discontinuing treatment for brain cancer. Dr. Sanjay Gupta will be on Full Circle tonight to answer your questions. Join us on Facebook Watch: https://t.co/wlCpzO75Os https://t.co/zvmB0HJda2