These are particularly risky times for commodity traders. Raw material markets are being pushed and pulled by geopolitical forces as well as rapidly changing and sometimes contradictory macro influences. The fundamentals of supply and demand seem to have been shunted to the sidelines. Consider the following: - The already shaky Iranian economy faces a set of U.S. sanctions, effective 4 November, that will curtail its oil exports and possibly generate a belligerent response to go along with its efforts to be the dominate power in the Middle East. Iran will surely be tempted to interfere with tanker traffic through the Straits of Hormuz and/or step up threats to Israel by its proxies in Gaza, Lebanon and Syria. Multiyear, high crude oil pric...