Charles Spencer says Buckingham Palace "has to gaslight" him in response to Diana book claims

Charles Spencer, the brother of the late Princess Diana, spoke to "CBS Mornings" co-host Gayle King about writing his new book, "Swan Song: Diana, My Sister." Charles Spencer, the brother of Princess Diana, sits down with "CBS Mornings" to discuss his new book "Swan Song" about his sister's death and her legacy thereafter.