Before we indict the Trump Administration without any real evidence, consider the Obama/Hillary policy of collusion with the Russians as to foreign policy and domestic affairs.

Russia was given "card blanc" by the Obama Administration's history (2009 - 2014) of passivity toward Russia.  Only until the past few months of the Obama Administration,  did the cover-up of Obama/Russian collusion intensify.  

In September of 2009,  Barack's first foreign policy decision as regards Putin's Russia,  was to take down the missile defense treatise with Poland and the New Czech Republic for no other reason than Russia's displeasure with those treatise. 

In 2012,  the Obama Administration was laughing at conservatives for suggesting the Russians were our enemy.  We have Hillary's "Russian Reset" as evidence of a friendly outreach to the Russians,  and Obama's pledge to be more flexible with Putin and his agenda.  

In his debate with Romney,  Obama had this to say as he derided the notion of a serious Russian threat to our country:   "The 1980s are now calling to ask for their foreign policy back because the Cold War's been over for 20 years.  When it comes to our foreign policy, you (Mitt Romney) seem to want to import the foreign policies of the 1980s, just like the social policies of the 1950s, and the economic policies of the 1920s."

Because of Obama's blind eye to Russia,  we have him refusing arms to Crimea during the Russian takeover. 

You may not know this,  but the Russians via Hillary's foundation,  single handily funding the Russians Silicon Valley.*

Finally,  for what it is worth,  General Flynn also worked for the Obama Administration.  

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*Regarding a Russian Silicon Valley: 

Fox News:    A 2010 program headed by then-Secretary of State Hillary Clinton to help Moscow develop a “Russian Silicon Valley” may instead have drawn some of America’s biggest tech companies into “industrial espionage” – even advancing the country’s military and spying operations, according to a new report by Clinton critic Peter Schweizer’s Government Accountability Institute.

“There are serious national security questions that have been raised,” the report said.
The program was pitched as a partnership involving U.S. and Russian government entities and companies. Major U.S. corporations like Boeing, Google, General Electric, Cisco and Microsoft – also generous donors to the Clinton’s family foundation – were solicited by Clinton to invest more than a billion dollars in the Skolkovo tech park outside Moscow, formally called the Skolkovo Innovation Center. The goal, Clinton said in speeches and to Russian media, was to “break down barriers with Russia,” create “more free flow of people and information” between the two countries, and ultimately strengthen Russia.
“We want to help because we think that it’s in everyone’s interest do so,” Clinton said in a 2010 speech at a U.S.-Russia summit, as she discussed building a technology center “right outside Moscow.”