New "Ice Age", AKA "Winter".
I actually checked out one of the few facts in the article, which was that there was "the coldest orthodox Christmas in Moscow for 125 years". Hmm, seems pretty crazy. So I checked the temperatures for January (orthodox Christmas is Jan 7th).
http://www.accuweather.com/en/ru/moscow/294021/january-weather/294021As you can see, there was a really cold period for about 5 days, between the 5th and the 9th January. The coldest day was the 7th, and it was -30 C. However the rest of the month so far has been surprisingly warm, nearly every other day is well above the historical average temperature. In fact, looking at the forecast for the rest of the month I'd expect January as a whole to be much warmer than average.
These sort of cold weather events happen quite often in places like Russia and Eastern Europe, freak cold spells normally caused by certain air currents and atmospheric conditions.
One cold week in one place =/= Ice age.