If we start putting larger numbers of troops under UN authority, it would give the organization some real teeth.
He evidently turned them back over to UN authorities, then flew to Tokyo.
The novel takes place in the 21st century, when, under UN authority, mankind has colonized the Solar System's every habitable planet and moon.
"Or to the UN authorities, and then I thought of you, so I came here."
He had made a mistake, but, then, Rohrbach had neglected to tell him that the UN authorities did not know.
Britain never managed to obtain UN authority allowing other navies to participate.
From the outset our forces in Afghanistan have been there with UN authority.
In each case, full UN authority is in place.
In Afghanistan throughout, UN authority has been in place.
Convicting a man of his stature of a capital crime, even through the UN authorities, would take some doing.