"We just reacted because we didn't have any other option. Any civilised country would act same way. I may remind you - September 11th, the reaction was similar. American citizens were killed. You know the reaction," Mr Ivanov said.
International condemnation for the Russian response had taken Moscow by surprise, according to Mr Ivanov. "We didn't think that we annoyed anybody," he said.
Mr Ivanov also rubbished comments by David Miliband, the Foreign Secretary. Mr Miliband earlier accused Russia of engaging in "19th Century forms of diplomacy" in its "blatant aggression" towards Georgia. He said "the sight of Russian tanks rolling into parts of a sovereign country on its neighboring borders will have brought a chill down the spine of many people, rightly".
Mr Miliband's claim that Russia was keen restore the Soviet Union was "total rubbish - to use a proper English word," Mr Ivanov said.
Sergei Lavrov, the Russian Foreign Minister, earlier taunted the US and Georgia over the crisis, describing the government of President Mikheil Saakashvili as a "special project" of the Bush administration rather than a proper state.