World News Roundup 08/23

<p>Severe Tennessee flooding leaves large numbers of dead and missing.&nbsp;President Biden says there have been talks of extending the August 31st pullout deadline in order to complete evacuations from Afghanistan. Plus, there are reports that full FDA approval of the Pfizer COVID-19 vaccine is imminent.&nbsp;CBS's Steve Kathan will have these stories and more on the CBS News World News Roundup.</p><p>See Privacy Policy at <a href="https://art19.com/privacy" rel="noopener noreferrer" target="_blank">https://art19.com/privacy</a> and California Privacy Notice at <a href="https://art19.com/privacy#do-not-sell-my-info" rel="noopener noreferrer" target="_blank">https://art19.com/privacy#do-not-sell-my-info</a>.</p>