Viktor Yanukovich to be Sworn in as Ukrainian President on February 25

However, current, and likely soon to be former, Prime Minister Yulia Tymoshenko ischallenging the election in court.

I don't think that the is going anywhere; the margin was 3.5%, and about 900,000 ballots, and the balloting was by all reports well observed by outside entities, and you can't steal that many votes if you are watched.