“We have a positive attitude towards Russia's readiness to resume cooperation between Polish and Russian historians and the work of the Group on complex issues,” TASS quoted him as saying.

According to him, "this would be a good signal of the desire to honestly talk about the causes of the Second World War."

Shinkovsky also said that Warsaw is counting on opening archives. He added that "it is always in the interests of the truth."

On January 17, the Russian Ministry of Defense released declassified documents for the 75th anniversary of the liberation of Warsaw from Nazi occupation.