Oil slumps as Russia-Ukraine tensions, Middle East conflict unsettle traders - MarketWatch

* Oil slumps as Russia-Ukraine tensions, Middle East conflict unsettle traders  MarketWatch * Russian invasion would bring more fear to markets  CNN * European markets close sharply lower on Fed meeting, Ukraine concerns; Stoxx 600 down 3.6%  CNBC * Dow tumbles 1,000 points as Russia, Ukraine tensions rise  Fox Business * Ukraine Risk Roils Treasuries to Commodities as Tensions Rise  Bloomberg
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