There's no doubt that foreign actors like Russia, China and Iran have already tried to interfere in the US election and may go even further than they did in 2016. But at the same time, there have been indications that some foreign leaders, like Vladimir Putin, may already be hedging their bets for a Biden victory. Election law expert Rick Hasen, however, believes that the threat of dirty tricks by foreign actors is still very real – an attack on the US power grid on Election Day, he says, is not outside of the realm of possibility. His conversation with Ian Bremmer is part of the latest episode of GZERO World.

Watch the episode: What could go wrong in the US election? Rick Hasen on nightmare scenarios & challenges