The article reports a rise in the prices of December corn, January soybeans, and March wheat contracts due to technical short covering and fears of escalation in the Ukraine-Russia war following President Biden's decision to allow Ukraine to use U.S. weapons. The USDA announced new export sales, leading to an increase in the prices of live cattle, feeder cattle, and lean hogs. Additionally, January crude oil and December S&P 500 futures are up, while the U.S. Dollar Index December contract is down, and December Dow futures are down 62 points.