Hi there,
I just went to Belarus and married my husband, we are trying to get him here to Canada. However, originally I was going to move there for a year or more, and I talked to the Belarussian Embassy in Canada etc...and they said I can go there for three months and only my Husband could find out what to do next, they were kind of secretive about the process. After he did some research he found out that typically you have to apply once your spouse is there on a visa (max three months) and it generally gets approved and you dont have to leave, rarely would they turn you down. Thats how he understands it.
Hope that helps. I was just gonna move there and take my chances, I couldnt see them turning me down, hardly anyone actually moves there, as opposed to trying to move out, from what I understand.