The largest individual donor to former Rep. Tulsi Gabbard’s (D-Hawaii) PAC in 2021 is an apologist for Vladimir Putin who runs a nonprofit that aims to foster cooperation between the U.S. and Russia.

Gabbard has long taken pro-Russian positions, most recently on Sunday when she gave credence to a baseless Russian-supported conspiracy about U.S. involvement in biological-weapons laboratories in Ukraine.

Sharon Tennison is an American activist who has repeatedly championed Russia’s dictator. Tennison’s donations in support of Gabbard comprise 69% of her total political giving, according to records with the Federal Election Commission.