Nation Mark Zuckerberg: Facebook has stopped Russia and Iran campaigns to meddle in 2020 election October 22, 2019Kristin Lam, USA TODAYComments Off on Mark Zuckerberg: Facebook has stopped Russia and Iran campaigns to meddle in 2020 election Facebook has shut down attempts from Russia and Iran to interfere in the 2020 elections, CEO Mark Zuckerberg said in an NBC interview aired Monday.