3 adjectives to describe plenipotentiaries

A regular treaty to this effect was drawn up and executed by the respective plenipotentiaries, and formally approved by the stadtholderess, who affixed her sign-manual to the instrument.

The Carthaginian plenipotentiaries accepted them under reservation of their being ratified by the respective authorities, and accordingly a Carthaginian embassy was despatched to Rome.

There was Castlereagh,not eloquent, but gifted, the honored plenipotentiary and negotiator at the Congress of Vienna; the friend of Metternich and the Czar Alexander; at that time perhaps the most influential of the ministers of state, the incarnation of aristocratic manners and ultra conservative principles.

3 adjectives to describe  plenipotentiaries