Stealing is absolutely Haram (prohibited). This ruling applies to stealing from individuals and governments alike even if such governments do not rule by Shari`ah. Allah (Exalted be He) says, And (as for) the male thief and the female thief, cut off (from the wrist joint) their (right) hands and: And eat up not one another’s property unjustly (in any illegal way e.g. stealing, robbing, deceiving, etc.)
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.