Kremlin aide Yuri Ushakov said on Wednesday that it was hard to understand what Britain was trying to signal to Moscow by naming two men it suspected of poisoning former Russian agent Sergei Skripal and his daughter Yulia.
British prosecutors on Wednesday charged two Russians for the attempted murder of the Skripals with a nerve agent, naming suspects for the first time in a case that has caused one of the biggest East-West rifts in decades.
"We have heard or seen two names, these names mean nothing to me personally," Ushakov told reporters in Moscow.
"Especially since Scotland Yard has said these names were apparently aliases. I don't understand why this was done and what sort of signal the British side is sending. It is difficult to understand."