MOSCOW - It was a clear September night when Yevhen Chervonenko left presidential hopeful Viktor Yushchenko healthy and in good spirits ahead of a secret meeting at a dacha near Kiev. Chervonenko, at the time Yushchenko's head of security and now Ukraine's new transportation minister, said he usually went everywhere with Yushchenko and even tasted his food. But that night was an exception. Yushchenko was going to the dacha to dine with Ukrainian Security Service chief Ihor Smeshko and his deputy, Volodymyr Satsyuk. "I was told that I was not required that night because the organizers wanted the meeting to...