Title: Change in the White House?
Subjects: Bush, george w. (george walker), 1946-, Obama, barack, 1961-, Polarization (social science), National security, united states, United states, economic policy, 2001-2009, United states, foreign relations, 2001-2009, United states, politics and government, 2009-2017, United states, foreign relations, 2009-2017, Politics and government, Foreign relations, Polarization (Social sciences), National security