Maria Butina, the only Russian arrested and convicted in the three year investigation of Moscow's interference in US politics, was sentenced to 18 months in prison in Washington on Friday.
The leader of a small Russian gun rights group, Butina used her ties to the NRA firearms lobby to build a network of powerful Republican contacts.
She had admitted one count of conspiracy to act as an agent of a foreign government without registering.
Prosecutors said that although she worked openly and was not tied to any Russian intelligence agency, she was a threat to the United States.
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