The CBOT was higher to end the week with short covering and modest fund buying occurring ahead of the three-day weekend. Trading was generally slow, and volumes were light as few are looking to add risk heading into a weekend where a possible Russian invasion of Ukraine will be the focus. Tensions are growing in eastern Ukraine as ethnic Russians are provoking the issue with a car bomb that was detonated Thursday evening. There has been speculation that Russia will use instability in Ukraine (instability that it is largely creating) as an excuse to invade the country.  Heading into the weekend, funds are thought to have bought 5,000 contracts of wheat (mostly HRW) along with 8,000 contracts of corn and 6,000 contracts of soybeans. Mar...