[lodi90]

More nonsense.
From wiki:
Cause of accident according to Polish report:

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Poland is currently suing Russia to get the aircraft wreckage returned. Much is disputed and as always the Russkies are being unhelpful. You are either unaware or being dishonest in leaving out key facts in support of Putinist Russia. I’ll give you the benefit of the doubt, FRiend.

http://www.reuters.com/article/2015/11/10/poland-russia-smolensk-idUSL8N1354OR20151110

[marvel5]

The Polish government report exonerated the Russians; what else do you need to know? Polish investigators went over the crash scene with a fine tooth comb and found no evidence of an explosion. Furthermore, there was a Russian flight data recorder and a Polish one on the plane and both were recovered. The Polish recorder’s data could only be read by the Poles and its data matched up perfectly with that of the Russian recorder. See the “Mayday” episode referenced.

Whether the wreckage is returned or not years later is irrelevant. It’s not even alleged in the article that the return of the wreckage has any bearing on the cause of the accident. All the necessary forensic evidence was extracted at the scene to which Polish investigators had full access.