China’s Leader Says He Is ‘Worried’ Over U.S. Treasuries - NYTimes.com

US Treasuries are risk free. We assume that all the time in finance classes. (For instance see CAPM). Now China is calling that into question.China’s Leader Says He Is ‘Worried’ Over U.S. Treasuries - NYTimes.com: "Speaking at a news conference at the end of the Chinese parliament’s annual session, Mr. Wen said he was “worried” about China’s holdings of Treasury bonds and other debt, and that