We are NOT asking about your secrest and documents about your secrets... i suppose we won't find any secret vodka formula or a documantation of a spaceship in your documants about Katyn right?
Isn't the bottom line if this like - We all will know who killed the POW's if you decide to show it to the world?
I think so. And i think we would already known it if it was done by Germans

Just my guess.
Sequential action you say? Ok, How about Ostaszkow, Starobielsk, Miednoje, Kozielsk - POW's from this camps were sent to Katyn and executed there - sounds sequential enought?
Of course those are not all of the polish POW camps

My grandpa who was fighting with Soviets after 17.09.1939 was captured and spent the winter 39-40 40km from Moscow in the summer uniform, living in a tent with other POW's and digging for peat used for heating in Moscow.
Then he was lucky, because due to agreement the Soviets and Germans made, he was exchanged for a Soviet soldoers prisoned by defending Polish Army who later was captired by Germans... and he was sent to Germany to work on a farm.
He was soo lucky he hadn't been schaduled to Syberia or Katyń!
Raven, you meant Pilsudski shooting Soviet POWs before WW2? Man, i've heard about it and i won't deny.
The worst thing that anyone can do is to defend the crimes with the lies

I'm not sure is Russia wanted any kind of documents or statements from Poland about it... and don't know if it's an issue for You or not... but if it is, i wish Poland will say the truth about it (if hadn't already).
But don't be surprised to see our anger if in exchange we will hear the same old sond about Katyn ok?

Like i said some years ago in discussions with Boroda - in last 1000 years our contries fought many wars about many stupid (or not) things.. many crimes were made on both sides.