From the news media:
(CNN) Attorney General Jeff Sessions met twice last year with the top Russian diplomat Sergey Kislyak in Washington. Sessions did not mention either meeting during his confirmation hearings when he said he knew of no contacts between Trump surrogates and Russians. Sergey Kislyak, the Russian ambassador, is considered by US intelligence to be one of Russia's top spies and spy-recruiters in Washington, according to current and former senior US government officials.
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The establishment news media continue their campaign of discrediting US President Donald Trump by implying the Russians through their intervention into our election process elected him. Yes, the Russians intervened in our election process and continue to do so, but not with the purpose of electing their “favorite candidate”.
To understand the real Russian intervention in America, we have to listen to Vladimir Putin himself. This is what he is saying concerning Russian-American relationships:
https://www.bing.com/videos/search?q=putin+answers+bbc+28%2f02%2f17&qpvt=putin+answers+bbc+28%2f02%2f17&view=detail&mid=836CD3B4A1CD08203E44836CD3B4A1CD08203E44&FORM=VRDGAR
According to Vladimir Putin,
• Russia is one of the two world super-powers the other one being the US
• During the turbulent Russian times when Russia was changing politically from the communist dictatorship to Russian-style democracy the US pushed Russia out of many her former sphere of influence and by doing that humiliated Russia
• Now Russia is trying to restore its world super-power position and a sort of restore her dignity - by all means available.
So the question is what means are available?
Direct military confrontation is not available because the US has unquestionable conventional military superiority over Russia. The conventional weaponry is very expensive and the Russians can provide in their budget no more than a mere fraction (10-15%) of what the US is spending.
What is available is the intelligence confrontation, including cyber and “immigration” weaponry, that is much less expensive - that is at the core of real Russian intervention in America. Through this intervention, Putin is working to create the social and political internal discourse in the US and make the US much less inclined to support an international confrontation with Russia.
The destabilization of the US political system, not the help to a certain candidate, was the real goal of Russian intervention, and they succeeded. For destabilizing the US, Putin used our all-mighty news media empire, which was fed by endless fake news leaks. Yes, our establishment news media helped Putin in destabilizing our country under the cover of the First Amendment. 

Some of Russian immigrants were used as a destabilization tool as well.

The massive Russian immigration of the 1970-1980 were mostly Jewish when the Jews were escaping the Russian anti-Semitism and were eager to join the Jewish branch of American Judeo-Christian nation. They wanted to become the true Americans delegating the Russian way of life to the history.
In the current Russian immigration, there are many for whom the recreation of Russian way of life in the US is the goal – spiritually they live in Russia, and the US for them is only the place for better housing and better earnings. They do not like and do not appreciate the American way of life - purposely or un-purposely, they destabilize the moral Judeo-Christian foundation of our country, and the Russian Orthodox Church here in the US helps them. The Russian way of life does not separate the Church from the State – the Church is helping the State – that is why in an US Russian Orthodox Church you may hear prayers for Putin.
From the news media:
FBI Agreed to Pay Spy Who Authored Trump Russia Dossier. A former British spy who prepared a dossier on unsubstantiated allegations of President Donald Trump's Russian activities was to be paid by the FBI to continue his work while he was getting money from Hillary Clinton supporters to dig deeper into Trump's past.
It is very much possible and probable that behind this “leak” was the Russian intelligence.
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In the intelligence confrontation, Russia has a much better chance to win. In Russia, the news media and the government establishment do not work against the existing government and the immigration does not exist.

So what to do? It looks like only the real threat of military confrontation - already demonstrated somehow somewhere - can bring Putin to the negotiation table. At the negotiation table, the success will depend on the US ability to propose something that could recreate an image of Russia as an equal superpower while preserving the US security and economic interests. Let’s hope US President Donald Trump can do it.