Russian forces have "changed their mind" about leaving the flashpoint Georgian town of Gori and are not withdrawing, a Georgian interior ministry spokesman said Thursday a day aftert Georgian President Saakashvilli said troops were advancing towards Tbilsi.  -- claims Moscow said were nottrue. In Washington, President Bush ordered Secretary of State Condoleezza Rice to Tbilisi to show what he called "unwavering" U.S. support for the former Soviet republic.  08/14/08