Fighting in Georgia Spreads

Russian forces have moved further into Georgia's rebellious province of South Ossetia, despite Georgia's call for a ceasefire. Georgian President Mikheil Saakashvili ran for cover, saying Russian planes were flying over the presidential palace in his capital city. Russia's Prime Minister Putin has flown home from the Olympics, but President Bush was still in Beijing when he denounced Russia's "disproportionate" response” to explosive hostilities in the region. We catch up with events and get the background on a long running local dispute with international implications. What are America's interests in a dispute between Russia and a former Soviet Republic? What's the possible impact on the campaign for president?