"When one door closes another door opens; but we so often look so long and
so regretfully upon the closed door, that we do not see the ones which open for us."
plenipotentiary
\plen-uh-puh-TEN-shee-air-ee; -shuh-ree\, adjective:
Containing or conferring full power; invested with full power; as, "plenipotentiary license; plenipotentiary ministers."
noun:
A person invested with full power to transact any business; especially, an ambassador or diplomatic agent with full power to negotiate a treaty or to transact other business.
There were two accounts, one in a news article, the second in the editorial section, telling
the minihistory of Pol Pot, sometime plenipotentiary ruler of Cambodia.