Storm-1516, a Russian disinformation group, aims to influence the U.S. election through viral videos that rely on fake whistleblowers and fabricated photos and documents.

At least 50 false narratives have been launched this way since last fall, according to a count NBC News assembled with researchers. The narratives aim to diminish Western support for military aid in Ukraine following Russia’s invasion, a contentious issue in Congress. The videos also back the re-election of Donald Trump, who has pledged to halt military aid to Ukraine, while painting the former president as a victim of a “deep state.” And they attack Vice President Kamala Harris.