Such instructions could actually endanger people — citizens receive air strike warnings via smartphone alerts. The Russian invasion of Ukraine has been a driving force in markets for the past few weeks. Stocks closed in the red Friday as investors weighed upbeat remarks from Russian President Vladimir Putin about diplomatic discussions with Ukraine against a weaker-than-expected print on U.S. consumer sentiment. "Like the bombing of the maternity ward in Mariupol," he said, "Even before it hits the news, you see the videos on the Telegram channels." For example, WhatsApp restricted the number of times a user could forward something, and developed automated systems that detect and flag objectionable content.
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