Doublespeak is a public speaking skill that employs methods and language that are intended to be euphemistic, obscure, and ambiguous. It is essentially being verbally evasive. This method is used widely in political speechmaking in the attempt to appeal to a maximum number of listeners.
One method of this is reframing the truth. An example would be replacing "The army is retreating" with "The army solidified its new lines 30 miles closer to the homeland." This is doublespeak in that although the replacement is a true statement it is ambiguous and masks the severity of the truth.