Sources: Trump wants to purge staffers perceived as disloyal; Dems demand new Russia sanctions for election meddling; Sanders now frontrunner as South Carolina and Super Tuesday near; Movie mogul Weinstein jailed after sex crimes conviction; Thousands att

Dow loses 1,000 plus points as global coronavirus cases surge; Wife of Supreme Court Justice Thomas gathering lists of staffers deemed to be disloyal to Trump; Senate Dems demand new sanctions against Putin and Russia for ongoing election meddling; White House back on 2020 Russian interference to help Trump; White House expected to ask Congress for coronavirus funds this week; Biden and Buttigieg ramp-up criticism of Sanders; Sanders rebuked for comments on Castro's Cuba; Biden counting on South Carolina win to keep his campaign alive; Weinstein guilty on 2 of 5 counts, sentencing March 11th; Vanessa Bryant speaks about her husband and daughter

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