( CNN) The disagreement between some Republican and Democrat on Russia's purposes in hacking the election remainders partially on the lack of agreement between intelligence agencies and the FBI about the conclusiveness of the evidence, officials explained this weekend.

The US intelligence community is increasingly confident that Russian meddling in the American election was intended to steer the election toward Donald Trump, multiple sources have said. That revelation, first reported by CNN a week ago, went beyond the October statement by the 17 intelligence agencies that only said that Russia was seeking to undermine the election, but did not go as far as to say it was to benefit Trump.

The New York Times reported this weekend that part of the reason for the change is that the CIA believes the Russians hacked not only Democratic organisations but Republican groups too, but that they are published documents from Democrat.