Ultimately, the CIA has assessed, the Russian government wanted to elect Donald Trump. The FBI and other agencies don't fully endorse that view, but few officials would dispute that the Russian operation was intended to harm Clinton's candidacy by leaking embarrassing emails about Democrats.
The latest intelligence said to show Putin's involvement goes much further than the information the U.S. was relying on in October, when all 17 intelligence agencies signed onto a statement attributing the Democratic National Committee hack to Russia.
The statement said officials believed that "only Russia's senior-most officials could have authorized these activities." That was an intelligence judgment based on an understanding of the Russian system of government, which Putin controls with absolute authority.
Now the U.S has solid information tying Putin to the operation, the intelligence officials say. Their use of the term "high confidence" implies that the intelligence is nearly incontrovertible.
"It is most certainly consistent with the Putin that I have watched and used to work with when I was an ambassador and in the government," said Michael McFaul, who was ambassador to Russia from 2012 to 2014.
"He has had a vendetta against Hillary Clinton, that has been known for a long time because of what she said about his elections back in the parliamentary elections of 2011. He wants to discredit American democracy and make us weaker in terms of leading the liberal democratic order. And most certainly he likes President-elect Trump's views on Russia," McFaul added. Clinton cast doubt on the integrity of Russia's elections.
As part of contingency planning for potential retaliation against Russia, according to officials, U.S. intelligence agencies have stepped up their probing into his personal financial empire.