Misleading Biden clip highlights Twitter policy concerns

What to watch: Twitter's rules for dealing with videos like these, which can go viral for zapping context from a presidential candidate's words, are still being ironed out.

• Twitter pointed to its in-progress policy on tackling synthetic or manipulated media when asked for guidelines on handling content that misconstrues or alters statements from politicians.
• But, Twitter declined to comment as to whether the video of Biden would apply to its new policy, since the policy remains in development.

Background: As of now, Twitter has proposed defining manipulated or synthetic media as "as any photo, audio, or video that has been significantly altered or fabricated in a way that intends to mislead people or changes its original meaning."

• Twitter spokesperson Trenton Kennedy told Axios that the video of Biden "is not currently a violation of the Twitter Rules," which define terms for removing content.

Go deeper: Misinformation haunts 2020 primaries