Of course the same thing can happen with women in this country as well, but they are much closer and easier to follow up with and possibly meet.
There are no magic questions that can tell you is someone is sincere, you can ask as many questions as you like but if they are good at being deceptive it really won't matter. I have a list of over 300 questions you can ask to get to know someone better. If you want them, I can give them to you. Let me know.
Also, you should do some reasearch on Russian bride scams or russian girlfriend scams, like this site here
that will tell you things to look out for. The number one thing is women who ask for money or make up reasons why they need money. Let me know if you want the list of quetions.