Top US intelligence officials say Russia, China and Iran are targeting voters in the US, with disinformation and propaganda related to the upcoming presidential election. US officials who track disinformation campaigns say the number of warnings they have issued to political candidates, government leaders and others has spiked in recent months. Host Marco Werman speaks with McKenzie Sadeghi, the AI and foreign influence editor at NewsGuard, a company that tracks and rates the reliability of news sites.