As I understand it, there is a trade embargo on Russia, so there's no trade to put a tariff on.
https://ustr.gov/countries-regions/europe-middle-east/russia...
In 2018, U.S. goods imports from Russia totaled $20.9 billion, up 22.4 percent ($3.8 billion) from 2017, but down 22.1 percent from ten years ago.