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Obama official warned colleagues of Russian meddling 03:29

(CNN)A former Obama White House official says the US government could have thwarted a Russian troll group’s attempts to meddle in the 2016 US presidential election.

The Kremlin-linked troll group, known as the Internet Research Agency, was charged last month by special counsel Robert Mueller.

Brett Bruen, who served as the White House director of global engagement from 2013 to 2015, said he warned colleagues on President Barack Obama’s National Security Council in 2014 that America would be targeted by Russian trolls. His warnings came after he saw how the Russians used the same methods — social media meddling and propaganda — to sow discord during Ukraine’s election in 2014.

“I was sitting in the Situation Room saying, ‘Why do we continue to look at this as an issue that only concerns Ukraine, that only concerns Eastern Europe? This is something that’s going to march across Western Europe. This is something that’s going to march over to our shores, and we need to be ready,’ ” Bruen told CNN.

Bruen said he took part in a US government task force to counter the Russian meddling in Ukraine’s election. That task force produced fact sheets and videos in response to Russian content and was considered a success, Bruen said. “We actually saw that the Russian bots and the Russian propagandists receded because we were contesting this space, because we were pushing out some pretty effective content.”

On the heels of that achievement, in late 2014, Bruen pitched an idea to set up a command center at the US State Department that would similarly track and counter any Russian propaganda targeted at US allies, but officials at State, he said, failed to recognize the threat.

Bruen said State Department officials, and in particular, Victoria Nuland, then the assistant secretary of state for the Bureau of European and Eurasian Affairs, did not recognize the danger and dismissed his ideas.

Nuland told CNN that achieving what Bruen proposed would have required additional funding from the White House.

“My memory is that Bruen wanted essentially to re-create the old USIA (US Information Agency), but there were no resources for that. The White House wasn’t going to approve funding,” she said. “We were operating on a shoestring budget as it was.”

“The thinking was to counter this by giving the truth to news outlets rather than just producing more propaganda,” Nuland added.

While a half dozen former State Department and NSC officials who spoke to CNN all agreed more should have been done to counter Russian misinformation in the lead-up to the 2016 election, they disagreed on what tactics could or should have been implemented to deter it.

“I would have loved to have had more support for that from all across government, not just from the State Department but from…