In our second appeal, in what circumstances will we change our holding under the "law of the case" rule?

We do not feel compelled to follow our former holding under the "law of the case" rule, but see Zdanok v. Glidden Co., 327 F.2d 944 (2 Cir.), cert. denied, 377 U.S. 934, 84 S.Ct. 1338, 12 L.Ed.2d 298 (1964), but we are unable to find any convincing reason, based on argument or new authority, for altering our holding in the original appeal. Accordingly, we will not extensively discuss the international law issue but reaffirm the discussion that is contained in our opinion on the first appeal. See 307 F.2d at 859-868. We will only comment briefly on several aspects of international law involved.