The conflict in Georgia has resulted in a serious undermining of the supply route for energy resources from the Caspian basin. [...] Governments of Turkmenistan and Uzbekistan recently signed agreements with Gazprom on intermediation in sale of natural gas to external markets. On the other side of the Caspian Sea, the very same Gazprom is holding negotiations with Azerbaijan. The threat of a lack of supplies is real enough for Azeri Socar to stop the expansion of a gas storage facility outside of Tbilisi, which had been planned for a year.
With regards to oil, the Kazakh company KazMunajGaz is giving up on its plans to build a new refinery in its oil terminal in Batumi. [...] Bombs also fell mere metres away from the BTC oil pipeline. The Russians missed, but the threat was a clear one.
The article also discusses Georgian and Russian national economics right now.
A glance at the map will illustrate the country's strategic importance...
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...but obviously the Baku-Tbilisi-Ceyhan pipeline [Wikipedia] is what tips the scales in economic favor of military intervention.