1) Diplomat 2) Icbm 1) Mediation pro 2) Soldier 3) Someone who keeps peace 
[n] - a member of a military force that is assigned (often with international sanction) to preserve peace in a trouble area 2. [n] - someone who keeps peace 3. [n] - the pistol of a law officer in the old West
Variant of the Ranger, Cadillac-Gage [US]
noun the pistol of a law officer in the old West