The FBI has agreed with CIA which once concluded that Russia has helped Donald Trump win the election. The Department of National Intelligence has presented proofs which link Vladimir Putin to the election hacking. The director of CIA John Brennan and the director of FBI James Comey have been meeting several times in order to discuss and review the issue that President Obama has directed.
In October, Obama has publicly accused Russia for having interfered with the U.S presidential election and having been involved in election hacks against Hillary Clinton. Obama said that he spoke to Vladimir Putin about this issue and added that U.S will take revenge against Russia.