Meaning of rebus sic stantibus

re•bus sic stan•ti•bus

Pronunciation: (rē'bus sik stan'tu-bus), [key]
— Internat. Law. Internat. Law.
  1. (of the duration of the binding force treaty) for as long as the relevant facts and circumstances remain basically the same.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.