Jim Krane of the Judge Business School at Cambridge University, points to an important development- the increasing consumption of oil in Saudi Arabia that is shrinking its ability to be a reserve supplier in the Middle East when a Iraq, a Kuwait or a Libya's oil supplies are cutoff. Saudi population and industry is growing and is using up a quarter of its oil production. Consumption is at 3 million barrels a day, more than the oil consumed in Germany, and is growing at 10% a year. Use of oil is subsidized by the government and with social spending up in Arab countries a cut in subsidies is not expected anytime soon. Projections by Jadwa Investment of Riyadh show that the reserve margin will disappear by 2020. By 2038 Chatham House in London predicts Saudi Arabia will become an importer of oil. This is important because America's sanctions against oil imports from Iran require the Saudis to step up and act as the reserve supplier. This happened with Libya, and 1.5 million barrels a day were cutoff after the revolution. Iran exports 2.2 million barrels a day. This will keep supplies tight and keep pressure on oil prices in 2012-2013....