KIEV, Ukraine - Russian President Vladimir Putin (news - web sites), who openly backed Viktor Yushchenko's rival for president of the Ukraine, said in an abrupt reversal Tuesday that he could work with an administration headed by the pro-Western candidate. "We have worked with him already and the cooperation was not bad," Putin said during a visit to Germany. "If he wins, I don't see any problems." Yushchenko was prime minister from 1999 to 2001, and before that he headed the Central Bank for six years. Putin irritated the West had quickly congratulating Prime Minister Viktor Yanukovych, the Moscow-backed candidate,...