As reported by Censor.NET citing RIA Novosti, this was announced by spokesperson to Russian president Dmitry Peskov.
"The Kremlin regrets that these statements were made. Apparently, Mrs. Prime Minister has not yet been brought up to speed with foreign affairs. Russia is actually one of the main guarantors of international stability and nuclear security, strategic security, and it is absolutely indisputable fact," he said.
The official stressed that Russia took the most active part in the process of nuclear nonproliferation.
"That is why such accusations can certainly be taken solely with regret. They are untrue. And we hope that Mrs. Prime Minister's impersonal point of view regarding our country will eventually prevail over the subjective one," Peskov said.
Earlier, British Prime Minister Theresa May accused Russian President Vladimir Putin of desire to undermine the norms of international law and insisted that threats to the UK from countries such as Russia and North Korea "remain very real."