1) Blackmail tactics 2) Bullying 3) Bullying tactics 4) Coercion 5) Fear 6) Impending perils 7) Menaces 8) Menances 9) Pressure 10) Sources of danger 11) Terrorization 12) They can be empty 13) They may be idle 14) Ultimatums 15) Vows to inflict injury 16) Warns the rats off Found on https://www.crosswordclues.com/clue/threats