1. Which event significantly impacted the current status quo in the South Caucasus according to the source?
Russia's invasion of Georgia in 2008
Explicação
The source explicitly states that Russia's invasion of Georgia in 2008 has significantly impacted the current status quo in the South Caucasus, making it the correct answer. The other options are not mentioned or emphasized in the source excerpt. Review: Geostrategic and security interests of Russia and China in the South Caucasus. Course evidence: "Russia's invasion of Georgia in 2008 has significantly impacted the current status quo in the South Caucasus."