The plan was:

In the aftermath of the assassination of the Tsar, and the rather spectacular implosion of the Russian state, Generals Issa Pliyev, Andrey Yeryomenko, Vasiliy Chuikov and several others take command of the Russian Far Eastern Theatre's forces based around Vladivostok and Khabarovsk, and transform the area (by force in some instances) into the Commune of the Amur, a communist state in the Russian Far East with designs of eventually re-conquering Siberia and the Urals, eventually driving west and taking the capital areas in European Russia (probably not, but that's their ultimate goal).

Sadly, I was a muppet and didn't read Japan's NS, which claimed the Amur area for their own. So now, in a bit of limbo here.