I have a narrow topic, i just don't want to write about it here. That's why I simply told "Relationships with Russia".
I wrote to another prof. from another university, he told me that "there are a sufficient number of faculty in our department with knowledge of that topic for you to pursue it here" and added that he encourages me to apply.
IRToni,
Thanks for comments. I hear what are you saying. Ignore my post, don't waste your significant time.
This is my first experience and I want to think over everything, not to fail.
I don't think that Russian studies is a rare topic) So I agree with you.
Anyways, I'm going to look through faculties again and take out some that have no similar interests.