Today on CNN 10, we take a look at how South Korea is navigating political chaos after the President declared, and then lifted a martial law order there. We also learn why one Eastern European country is facing protests and political tensions of its own, before getting an inside look at how US researchers are trying to understand why it's so hard to avoid ultraprocessed foods. We round it all out with a police chase that won't be setting any records for speed. All this and more on today's CNN 10!

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