Despite these trends and international moves, criminalization has not occurred in all UN member States. Determining the criminal status of marital rape may be challenging, because, while some countries "explicitly criminalize" the act (by stipulating in their rape laws that marriage is not a defense to a charge of rape; or by creating a specific crime of 'marital rape'; or, otherwise, by having statutory provisions that expressly state that a spouse can be charged with the rape of their other spouse) and other countries "explicitly exempt" spouses (by defining rape as forced sexual intercourse outside of marriage; or forced sexual intercourse with a woman not the perpetrator's wife; or by providing in their rape provisions that marriage is a defense to a charge of rape), in many countries the ordinary rape laws are silent on the issue (that is, they do not address the issue one way or another)—in such cases, in order to determine whether marital rape is covered by the ordinary rape laws it must be analyzed whether there are judicial decisions in this respect; and former definitions of the law are also important (for instance whether there was previously a statutory exemption that was removed by legislators for the purpose of implicitly including marital rape).