It can get even weirder. Take the International Convention for the Regulation of Whaling which introduced a moratorium on whaling. Norway has signed and ratifie

It can get even weirder. Take the International Convention for the Regulation of Whaling which introduced a moratorium on whaling. Norway has signed and ratified the convention, but (per Wikipedia) "Norway maintains an objection to paragraph 10(e) of the convention (the section referring to the 1986 moratorium). Therefore, that provision is not binding upon Norway and the 1986 IWC global moratorium does not apply to it."