Apparently it wasn't the US after all, it was the Israelis who provided the funding for Yuschenko. Yahoo! News - Crisis erupts between Israel and Russia over aid to Yushchenko: report.
This makes it sound like a political problem only. But it isn't. The real problem with this is that there has been a tendency in Russia to blame it on the Jews when things go wrong. Looks like the Putin government is doing it again. Point is that anti-Semitism is alive and well there, still.