I rarely chime in here any more but this sitch caught me and I think I am caught up. If you ask me he has been taking advantage of you and your hope. It may be to his advantage to slow things down. This is an international thing and visas are involved. There has to be an OW. But the most important thing I have heard is that you feel you might be losing your dignity. I will tell you from a similar experience that I chose myself in a very difficult emotional battle that could have killed me. Take care of yourself. This person is not thinking like you. If he has said the marriage is over most likely that is his truth. Believe it and face it. This does not mean you have to do anything.
Personally I waited for my x to file for divorce and it took a long time. Same old MLC plus international drama story. Wonder