A truck passes pumpjacks in the Belridge oil field on November 03, 2021 near McKittrick, California.Mario Tama | Getty Images News | Getty ImagesOil prices slid to a two-week low on Tuesday on continued ceasefire talks between Russia and Ukraine and concerns about demand in China after a surge in Covid-19 cases.Brent futures dropped $4.20 or 3.9% to $102.70 a barrel by 0125 GMT after falling 5.1% the previous day. U.S. West Texas Intermediate (WTI) crude fell below $100 level for the first time since March 1, dropping $4.30 or...