SINGAPORE - Oil prices slid on Tuesday from their highest levels in a month on a stronger dollar and after the head of the International Monetary Fund warned of a tougher 2023 as major economies experience weakening activity. Brent crude futures dropped 98 cents, or 1.1 percent, to $84.93 a barrel by 0148 GMT while U.S. West Texas Intermediate crude was at $79.49 a barrel, down 77 cents, or 1 percent, after the U.S. dollar strengthened. A stronger greenback makes dollar-denominated commodities more expensive for holders of other currencies. IMF Managing Director Kristalina Georgieva said on Sunday that the United States, Europe and China - the main engines of global growth - ar...Keep on reading: Oil slides after IMF says slowing global growth engines portend tougher 2023