Moscow is uncomfortable about European states' stance over the poisoning of former double agent Sergei Skripal and his daughter in England, RIA news agency cited the Kremlin as saying on Saturday.

"It's a big discomfort for us to have unpredictable and aggressive counterparts. But this is the reality we have to live with," Kremlin spokesman Dmitry Peskov said, according to the agency.

He said Russia would not "lose momentum" in conveying its points about the case to European countries.