The John Kerry-Iran controversy, explained

But others have been more circumspect. Sen. Ted Cruz (R-Tex.), while being highly critical, added the caveat, “If this tape is verified.” Sen. Lindsey O. Graham (R-S.C.) urged even more caution. “I don’t know if we should trust that tape or not. If it’s true, it’s very damaging,” Graham said. “I like John Kerry, but that would not be helpful, and it would be very problematic if it were true. But let’s wait and see how authentic this is.”

Source: WP