Let me know if my answer is what you were looking for.
I read it again and looks like it covers the questions outlined by "puzzled guest". If you need more of my thoughts post the specific questions in the forum, so others can read and join in. I looked at the link that you sent me - http://www.unisa.edu.au/samstag/scholars/scholars2001/moore.htm - very interesting since the russian word "igo", as it written on the painting, means "yoke" but the most common meaning is - military occupation. Go figure!