The clip shows a number of brightly painted tanks taking part in a mechanized paramilitary biathlon. At first glance I thought all the tanks were upgraded T-72s or T-90s, but then I found them called out as T-72B(M)s in the Modern AFV Discussion Group on Missing-Lynx. I have since found that there is a wiki site on the Tank Biathlon and a RIA Novosti news story that also call the vehicles out as T-72Bs. The tank colors corespond to the nationality of the crews, yellow tanks - Belarus, red tanks - Russia, blue tanks - Kazakhstan and green tanks - Armenia. You can follow the clip back to the you-tube source, MeanwhileRussia, for more details of the event which occured on the Alabino proving grounds about 60 km southwest of Moscow from August 11th to the 17th. I found the results of the this year's Tank Biathlon in a "The Bug Pit" post on the eurasianet.org ste. First prize went to the Russians, with Kazakhstan second, Belarus third and Armenia a distant fourth.
Efforts are being made to expand the Russian Tank Biathlon to include crews from Germany and Italy in 2014. The Russians have stated that the US has been invited in 2014, but when NPR tried to confirm the invite they received no response from the US Department of Defense.
There is a ton of coverage of this event on the web and a simple google search will turn up a number of hits but most web pieces just cover the same ground over and over again. Examples include the BBC has coverage of the Tank Biathlon that an includes a video clip of the event and the clips and photos found on the RT and Business Insider websites. These types of tank games are nothing new, but on a lazy Sunday afternoon they can pass for a good distraction.