I can get divorced in Russia. I should add that it's likely that my wife will leave for the US - but I can file in Russia irrespective of whether my wife goes to UK, USA or continues to stay in Russia
Because you don’t have minor children and you are not a Russian citizen, you can file divorce suit only at the respondent’s place of residence. So you will have such right until your wife lives in Russia. If she leaves Russia, you will loose this right. But with your wife’s consent, she also can initiate divorce and no matter there she lives, she can file divorce in Russia where you have residence.