Ukrainian and foreign dignitaries on Wednesday commemorated the 65th anniversary of the Nazi massacre of Jews at the Babi Yar ravine, laying flower-encircled candles at the foot of a giant monument to the tens of thousands of victims. Ukrainian President Viktor Yushchenko and Israeli President Moshe Katsav led the procession behind an honor guard of Ukrainian soldiers carrying a garland of white flowers.Hundreds of mourners - many of them Jews who had traveled from around the world - looked on, clutching their own offerings of red and white carnations.