In the central Georgian town of Igoeti, a Russian tank has been caught on film ramming through a roadblock set up by the Georgian police.
The incident comes as Moscow is accused of defying pressure from the West to quickly withdraw from Georgia.
After the Russian tank crashes through the roadblock, one police car is seen being dragged along the road. At least three Georgian vehicles were damaged in the incident.
Russian troops and tanks are still deployed in several parts of the country, despite promising to pull back in line with a French-brokered ceasefire agreement.
The French foreign minister, Bernard Kouchner, whose nation currently holds the EU presidency, could not hide his impatience.
“We don’t want to threaten them, (but) we are serious. There is a red line: that is the withdrawal of the troops.”
NATO foreign ministers are due to hold an emergency meeting later today to discuss the crisis, amid reports the US wants some NATO-Russia meetings to be suspended. But Moscow’s envoy to NATO is talking tough.
Dmitry Rogozin, the Russian Ambassador to NATO, said: “If the decisions of the NATO Council are not in line with reality, with the state of affairs in the Caucasus, we will not be able to maintain the quality and the timetable of our relationship with NATO.”
Meanwhile, in Vienna, the Organisation for Security and Cooperation in Europe has failed to agree on a plan to send up to 100 extra military monitors to observe the ceasefire. However, officials say talks on the issue will continue.