Iranian stockbrokers monitor share prices at the Tehran Stock Exchange in April. The historical Iran nuclear deal could open the country's market up to international investors. Vahid Salemi/AP hide caption

itoggle caption Vahid Salemi/AP

A woman walks past a broken cafe window in London earlier today (Aug. 10, 2011). Peter Macdiarmid/Getty Images hide caption

itoggle caption Peter Macdiarmid/Getty Images