Is the country where you husband resides a signator to the Hague Convention? If so those rules must be used assuming your husband is a resident of the subject country.
See a local OR attorney because this is very complicated.
You should consult with an attorney to discuss the best way to serve your husband. There are many options for achieving service of process, but some require the permission of a Judge. While your husband living in another country could definitely slow down the process the Court will not prevent you from getting divorced because of this.
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