In the wake of the unprecedented tragedy endured by Poland, Russia has released documents concerning the World War II massacre of 20,000 Polish officers at Katyn in 1940. The act is significant, although the papers had already been published in 1992, because any admission of guilt or compromise on the part of Russia's is historic.
Of course, Russia is refusing to release the full cache of papers, including the names of those who ordered the massacre. Poland has graciously invited further forthcomingness. Europeans seem to be reacting with a mixture of gratitude at the gesture and fury that Russia is still withholding and acting ... well, as they've come to expect from the Evil Empire.
I would not advise high expectations that Russia has yet decided to join the Free World as a force for good - but each little step is commendable.