These exercises, as well as the Chinese exercise also going on now, are designed to train to attack US/South Korean forces in the region (Given reason is to repulse a US attack on the Vladivostok area and the NorthEastern region of China. The Chinese and Russians have a massive joint exercise scheduled next year as well.
I agree
Personally, the Russians in this part of the world are more concerned with the Chinese and their ever growing expansion to the region. The Chinese would love the mineral rich Siberia.