President Bush has called Soviet domination of Eastern Europe after World War Two one of the greatest wrongs in history.
During an address in the Latvian capital, Riga, Mr. Bush again stressed that the allied victory against Nazi Germany did not bring an end to oppression in the area, which was dominated by the Soviet Union.
Earlier, Mr. Bush praised the Baltic countries for their progress in democracy since regaining independence from Soviet rule 14 years ago.
At a news conference in Riga today - Saturday with the presidents of Latvia-Vaira Vike-Freiberga, Lithuania-Valdas Adamkus and Estonia-Arnold Ruutel, Mr. Bush described the Baltic states as symbols of freedom.
The Estonian and Lithuanian presidents have refused to attend a ceremony Monday in Moscow marking the 60th anniversary of the Allied victory over Nazi Germany.
Mr. Bush is to attend that Moscow ceremony. His trip also takes him to the Netherlands-Sunday and Georgia-late Monday.