Moscow spent more than 53 billion rubles ($1.04 billion) supplying a separatist rebellion in east Ukraine and at least 220 Russian soldiers have been killed there, a report by Russian opposition activists said Tuesday.
The report was the last project of murdered Kremlin critic Boris Nemtsov, who used open source information and interviews with families to paint a picture contradicting Moscow's argument that no serving Russian troops are fighting in Ukraine.
Nemtsov was shot dead in central Moscow in February and members of his party, the liberal RPR-Parnas, and several opposition journalists helped finish the 65-page report.
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