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Demonstrators wave protest flags in Edinburgh Place, Hong Kong, on Thursday. Photo: Alastair Pike/AFP via Getty Images

Hong Kong police used tear gas on protesters as late-night clashes erupted in the Asian financial hub ahead of a Monday meeting in Beijing between Chinese President Xi Jinping and the city's embattled leader Carrie Lam, Reuters reports.

Why it matters: Violent clashes between police and demonstrators have often left the Chinese territory paralyzed since the pro-democracy protest movement began six months ago. But the protests had been notably peaceful in recent days.

A tweet previously embedded here has been deleted or was tweeted from an account that has been suspended or deleted.

Go deeper: Hong Kong protests show no signs of slowing as movement enters 6th month

Go deeper

Biden explains justification for Syria strike in letter to Congress

Photo: Chris Kleponis/CNP/Bloomberg via Getty Images

President Biden told congressional leadership in a letter Saturday that this week's airstrike against facilities in Syria linked to Iranian-backed militia groups was consistent with the U.S. right to self-defense.

Why it matters: Some Democrats, including Sens. Tim Kaine (D-Va.) and Chris Murphy (D-Conn.) and Rep. Ro Khanna (D-Calif.), have criticized the Biden administration for the strike and demanded a briefing.

7 hours ago - Health

FDA authorizes Johnson & Johnson's one-shot COVID-19 vaccine for emergency use

Photo: Illustration by Pavlo Gonchar/SOPA Images/LightRocket via Getty Images

The Food and Drug Administration on Saturday issued an emergency use authorization for Johnson & Johnson's one-shot coronavirus vaccine.

Why it matters: The authorization of a third coronavirus vaccine in the U.S. will help speed up the vaccine rollout across the country, especially since the J&J shot only requires one dose as opposed to Moderna and Pfizer-BioNTech's two-shot vaccines.

Updated 7 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Annelise Capossela/Axios