A former administration official considered him a national security problem.
Six of the previously undisclosed contacts described to Reuters were phone calls between Sergei Kislyak, Russia's ambassador to the United States, and Trump advisers, including Flynn, Trump's first national security adviser, three current and former officials said. The next day, Putin said he wouldn't retaliate.
News about Flynn's activity comes amid intense scrutiny over his and other Trump associates' potential contacts with Russian Federation.
In a statement a White House official said, "We are confident that when these inquiries are complete, there will be no evidence to support any collusion between the campaign and Russian Federation".
Regardless, the two stories are likely to keep Trump's Russian Federation troubles brewing over the weekend, even as the President tries to fix his image with a strong first foreign tour. The Times report said the Trump team knew about the Turkey investigation weeks before Flynn was let go.More news: Police fire in the air to disperse lynch protesters
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The many controversies surrounding Flynn raise further questions about why Trump was so determined to bring him into his Cabinet and overlook his considerable baggage, which included including a falling-out with the Defense Intelligence Agency and his lobbying work for a Dutch firm linked to Turkey's government throughout the end of 2016. General told a group of friends and supporters at a restaurant in Virginia on 25 April, according to unnamed sources close to General Flynn. Lawmakers in the House and Senate as well as the Department of Justice (DOJ) are intensifying their investigation into the possible collusion of the Trump campaign and the Russians during the 2016 presidential election.
And he has remained steadfast in his loyalty to Flynn, even as the scrutiny surrounding his fired aide continues to weigh down his presidency.
Stoking the fire, the New York Times and then CNN reported Tuesday that Trump had asked former Federal Bureau of Investigation director James Comey to drop the probe into Flynn before he sacked him on May 9.
Trump's obvious bond with Flynn, like his relationship with Attorney General Jeff Sessions and other top advisors, appears rooted in the fact that they supported his then-longshot presidential campaign previous year at a time when most Republicans were ostracizing him.