The rats are abandoning the ship, as the saying goes. In this case, the Democratic leadership are the ones fleeing, and the ship they're abandoning is President Biden. After the failed assassination attempt on former President Trump, which thrust the country into one of the most tumultuous political weeks in recent memory, chatter is getting louder again within the Democratic Party for Biden to step down.

In a wide-ranging interview for the latest episode of GZERO World, media journalist, and former CNN show host Brian Stelter joins Vanderbilt political historian Nicole Hemmer on a panel with Ian Bremmer to take stock of the week that was and to chart the way forward for the Democratic Party. But there's no getting around the optics. Just as the GOP was displaying a tight-knit sense of unity at the RNC convention in Milwaukee, the Democrats were in disarray. Stelter says that when it comes to Joe Biden's future, the writing is on the wall.