World Bulletin / News Desk 

A senior British minister has claimed that Russia’s “aggressive behavior” is a stark reminder that it has the potential to pose the greatest single threat to the U.K.’s security – drawing a sharp response from Moscow’s ambassador in London.

“Continuing to gather intelligence on Russia’s capabilities and intentions will remain a vital part of our intelligence effort for the foreseeable future,” Philip Hammond said in a speech to the Royal United Services Institute think-tank in London.

The British foreign secretary said that it was “no coincidence” that U.K. spy agencies were recruiting Russian-speakers again.

However, Russian ambassador to London, Alexander Yavenko, hit back saying that the minister’s remarks “prove John Le Carre right: intelligence services are a spiritual home of the British political elite.”

In a wide-ranging speech, Hammond said that Britain in the 21st century was faced with a diverse range of threats, hitting out at those he called “apologists” for blaming the U.K.’s intelligence service for armed groups.

“We are absolutely clear: the responsibility for acts of terror rests with those who commit them. But a huge burden of responsibility also lies with those who act as apologists for them,” Hammond said.

Hammond said a major security threat was from the radicalization of individuals – so-called “lone wolves.” He said that the internet had become a source of terrorist inspiration, with much of the propaganda coming from terrorist groups like al-Qaida.

Talking about “state adversaries” Hammond accused Russia of “clear disregard” for the rule of international law.

He said that for two decades since the end of the Cold War, Britain and its allies had sought to draw Russia into a rules-based international system but “we now have to accept that those efforts have been rebuffed.”

“We are now faced with a Russian leader bent not on joining the international rules-based system which keeps the peace between nations, but on subverting it,” he said.

Hammond claimed that Putin’s alleged actions – illegally annexing Crimea and using Russian troops to destabilize eastern Ukraine – fundamentally undermined the security of the sovereign nations of Eastern Europe.