Just when you think the Argentine government has done all it can to screw up the country's economy, it manages to do something even more counterproductive. Over the past several years, the Kirchner government has systematically screwed up its agricultural sector with export taxes, export quotas, and a disregard for the intellectual property right for biotech crops. Now it is determined to further screw up its energy sector and trade relations with Europe by expropriating 51 percent of the country's largest oil company. This latest development has large and important implications for the global agricultural market.Expropriation: YPF was the state-owned oil company of Argentina. That company was sold in 1999 by the government in a privatiza...