Twitter says a hacking attack on employees was to blame for one of its biggest ever security lapses.
Demonstrators have held banners saying "Free Sergei Furgal," while others have called on President Vladimir Putin to resign.
Brad Parscale was reportedly blamed by Donald Trump's inner circle for a botched rally in Oklahoma.
The UK cited security risks - but China says it is "an excuse to co-operate with the United States".
Hong Kong is at the center of two major storms: one medical, one political.
Two million people are hit by monsoon flooding in Assam, with tigers and rhinos also badly affected.
Couples desperate to reunite amid travel restrictions use hashtags like #LoveIsEssential to bring attention to their separations.
The president says he has also signed a bill to impose sanctions on Chinese officials over Hong Kong.
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