The expansion of NATO's military infrastructure to the east cannot remain without a response from Russia, the Russian president's spokesman Dmitry Peskov said on Wednesday in a comment on NATO's invitation to Montenegro to join it, according to Russian media.
"Moscow has always said... that the continuing expansion of NATO, the NATO military infrastructure eastward, of course, cannot help but lead to a response from the east, that is, from Russia," he told reporters when asked about Moscow's position on the matter and whether it intended to take measures to respond to it.
He said that it was too early to talk about specific measures.
Russian President Vladimir Putin for now does not plan to make a statement on the topic, he said.
"No, nothing concrete is pending. We have different priorities now," he said.
Viktor Ozerov, Chairman of the Federation Council on Defense and Security, said earlier that Russia would discontinue joint projects with Montenegro, including military ones, if the country joined NATO.