It is an ambassador's duty to stand up for his nation's foreign policy in any era and under any government whatsoever. Ambassadors are, in the full meaning of the term, titled spies.
Power, from the standpoint of experience, is merely the relation that exists between the expression of someone's will and the execution of that will by others.
Since everything in nature answers to a moral power, if any phenomenon remains brute and dark, it is that the corresponding faculty in the observer is not yet active.