Breaking: John McCain diagnosed with brain cancer

The office for the 80-year-old McCain, the Republican nominee for president in 2008 and a U.S. senator representing Arizona since 1987, released a statement from the Mayo Clinic announcing that, after undergoing a procedure to remove a blood clot from above his left eye last week, “Subsequent tissue pathology revealed that a primary brain tumor known as a glioblastoma was associated with the blood clot.”