An oil refining factory owned by the Russian company Rosneft, outside the town of Achinsk, Russia, in 2013. The company says that hundreds of sites are being explored throughout the country as potential sources of oil and gas — but to tap those sites, Russia depends on Western companies. Ilya Naymushin/Reuters/Landov hide caption

itoggle caption Ilya Naymushin/Reuters/Landov

An artist's installation shows pre-foreclosed homes in Newark, N.J., in July 2009 at the Queens Museum of Art in New York City. Mario Tama/Getty Images hide caption

itoggle caption Mario Tama/Getty Images