In order to start divorce proceedings in Russian court you do not have to go to Russia. You can retain a lawyer in Russia and issue a power of attorney in the lawyer's name. If this power of attorney is going to be certified by US notary public, you have to do apostille for this power of attorney at secretary of you state to make this document valid outside the USA.
I personally handle divorce cases in Moscow and all over Russia. If you are interested in cooperation, I will send you the text of Power of Attorney agreement, which you will need to fill out. To do that, I need to know the information on the parties involved (last names, first names, addresses - yours and your wife's). Please also send me a copy of the Marriage Certificate (in jpeg format), and also let me know who possesses the original Marriage Certificate.