The precedent Russian trailer is actually an international trailer for promoting X-Files 2, aka X Files I Want To Believe.
An English version has surfaced on the web, but strangely it shows also Chinese subtitles... Maybe that's the sign of a revival of some underground commie conspiracy: the truth is out there! (the X-Files 2 trailer with Chinese subtitles is here)
Fortunately we now have the latest official X-Files 2 international trailer, in English and in good quality:
This year to find the truth, you must believe!
The X-Files: I Want To Believe
Even in English the trailer heeps its mystery! This X-Files movie is going to be great. And a kiss - and more - between Mulder and Scully would be the acme of X-Files 2!