So you quote the CIA-curated Wikipedia. Well, You can argue with REUTERS:

"Georgia started war with Russia: EU-backed report"

https://www.reuters.com/article/world/georgia-started-war-with-russia-eu-backed-report-idUSTRE58T4MO/

"In the Mission's view, it was Georgia which triggered off the war when it attacked Tskhinvali (in South Ossetia) with heavy artillery on the night of 7 to 8 August 2008," said Swiss diplomat Heidi Tagliavini, who led the investigation.