There's a fresh record for the S&P 500, while the Dow sees its best day in almost a month, as Wall Street counts down to the all-important Fed decision and an updated dot plot. U.S. Defense Secretary Lloyd Austin warns Ukraine's survival is in danger amid a funding impasse in Congress, as Poland's foreign minister calls on America to act. Elsewhere, Kering issues a profit warning, with the luxury giant saying an almost 20 percent plunge in Gucci sales will drag on group revenues. And Nvidia CEO Jensen Huang tells CNBC the company is just at the beginning of an 'AI computing ramp' that he expects to last years.

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