US officials are preparing insider trading charges against numerous financial players such as investment bankers and hedge fund managers. The charges could expose a culture of pervasive insider trading in US financial markets through connected insiders transmitting private information to traders. Wells Fargo will pay Citigroup $100 million to settle lawsuits over Wells Fargo's 2008 purchase of Wachovia. China will increase grain supplies and open more land for vegetable crops to combat rising inflation caused by flooding and cold weather damaging crops. China is emerging as a competitor in the international arms trade by offering increasingly sophisticated weapons that are beginning to rival other major exporters like Russia.