strange air violence

Air violence on a UK plane. And the culprits are two women on a drunken rampage. So don't the plane have air marshals? If they have it in US planes what about planes of other brands? One woman was reported using a vodka bottle as a weapon trying to club air cabin staff. Imagine them being men.... it would be worst. If there are stationed security staff they would be able to handle the women easily. Tough luck for the two women.