Sergey Kislyak: The Russian ambassador to the United States from 2008 to 2017, Sergey Kislyak sat in the front row during a Donald Trump foreign policy speech in April 2016 and then interacted with several members of Trump’s campaign, including Senator Jeff Sessions, in the months before the election. In December 2016, as Trump prepared to take office, Trump’s incoming national security adviser, Michael T. Flynn, called Kislyak and asked that the Russians not respond to new sanctions imposed by President Barack Obama as a response to Russian election interference.