The Diplomat is a bit of an unusual cocktail in that it’s vermouth-based. Vermouth, whether dry or sweet, is a fortified wine as opposed to a distilled spirit like gin, vodka, whiskey, etc. This gives the Diplomat a much lower alcohol content than many other cocktails, which may be a hint at its name.
3 oz dry vermouth
2 oz sweet vermouth
1 tsp maraschino liqueur
4 dashes Angostura bitters
Combine all the ingredients in a mixing glass half filled with ice. Stir thoroughly and strain into a chilled cocktail glass. Garnish with a wedge of lemon.