"What evidence (if any) is there that Yuschenko is a Moscow plant?"
First, for Moscow/KGB this is standard operating procedure (controlling both sides of the debate/revolution/election so that their side wins no matter what). Second, Yuschenko's priveledged past before the "fall" of the Soviet Bloc makes him extremely suspect. Also, see link I posted above.
PS Plenty more links where link on post #59 came from.
In the meantime, what do you think the US can/should be doing with regard to the Ukraine elections?