He stated this on his page in Twitter. "I'm going to return tomorrow to work in the Senate to focus on medical reform and sanctions against Russia," McCain writes..

80-year-old John McCain had previously been diagnosed with brain cancer. A tumor known as glioblastoma was detected during an operation at the Arizona Clinic for the removal of a blood clot over the left eye. The senator's family considered all treatment options, including chemotherapy and radiotherapy.

Recall, as reported URA-Inform, Senator McCain discovered a brain tumor.