Actually, it is even bigger than just cooperation between these two nations.
This is about a joint Russia, Estonia, U.S., Canada, Sweden, Mongolia and China cooperative project.
This is big. Really big.
How big you ask?
It seems that sightings of the Yeti, otherwise known as Bigfoot, the Abominable Snowman or Sasquatch, have increased three-fold in the Siberia's Kemerovo region over twenty years ago, and some have found what they believe is evidence, including rudimentary twig huts, twisted branches and trees and footprints of up to 14 inches.
Because a Bigfoot would have big feet, right?
So the governor of region has developed this theory that the Yeti is really Homo neanderthalensis, or a Neanderthal, and he is having a conference to get scientists from the above mentioned countries to come check it out. (Of course, his theories about neanderthals having "No clothing on them, no tools in hands and no fire in the household" suggests he is not up on the most recent research on neanderthals either...but anyway).
Of course, skeptics are certain all the "evidence" is the result of hoaxes. And the conference could just be an attempt to build up Yeti tourism in the area.
As my seriously funny APAO said, the truth has Yeti to be discovered.
You can read more about this cooperative effort here.