Where are you printing this - to a console? If so, be aware that most (all?) consoles can't handle non-ASCII characters, so the fact the "?" appears means nothing. You could save the response to a file (specifying UTF-8 as encoding), and open it with a Unicode-capable editor.
Joined: Apr 24, 2009
You were right, I guess the console is not capable of handling nin-ASCII characters. I wrote to a file using UTF-8 encoding and opened it using notepad. And I was able to see the Russian characters.