"By the end of December, it was getting beyond ridiculous. I’d been through plenty of Russian winters in my life, but this was a new low. There was no sun," writes Mladen Antonov, a veteran AFP photographer on his third Moscow posting. "Moscow can be famously gray in winter, but usually you get a day of sunlight every week or two. Not this time. For the entire month, we had a grand total of six minutes -- six minutes! -- of sunlight."