How difficult? It depends, almost entirely whether the matter will be contested, presuming you can file at all.
You do not indicate whether any person is a resident of Nevada; if not, neither can file for divorce here until one of the parties establishes residency and lives here for at least 6 weeks. See http://willicklawgroup.com/grounds-and-jurisdiction/. The rules are very different for annulment, however, so long as the marriage was here. See http://willicklawgroup.com/annulment/.
So, if no one involved is a Nevada resident, my suggestion is to contact a family law specialist well versed in annulment law; if your facts would appear to qualify, you may very well be able to do everything remotely. We do several annulments every year for folks located out of the U.S., and have done two for Italian residents just in the past year or so, on similar facts.
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ANSWER TO REPLY:
Of course, we are family law specialists (that is why I was selected to answer these questions for this State), and if you send me an e-mail contact, I can and will send youi further information about initiating an annulment action whenever you wish, from where you are. E-mail: Marshal@willicklawgroup.com; phone 702-438-4100.
Answered on Sep 01st, 2013 at 6:31 PM