Joe Biden's prostate cancer diagnosis reveals a high Gleason score, indicating aggressive cancer. Dr. Arpeet Shah and Dr. Nicole Saphier comment on what this means for prognosis.

On Sunday, Joe Biden disclosed that he has an aggressive form of prostate cancer that has spread to the bone, which means that it can be managed but not cured.

It is now clearer than ever that Biden was in no condition, either mentally or physically, to serve a second term.