International politics & state strength

 Volgy, Thomas J.; Bailin, Alison,;

Boulder, Colo. : : Lynne Rienner Publishers, , 2003

Politics among nations :the struggle for power and peace

 Morgenthau, Hans J.; Thompson, Kenneth W.,; Clinton, W. David.;

Boston : : McGraw-Hill Higher Education , 0

The power curse : influence and illusion in world politics

 Gallarotti, Giulio M.;

Boulder, Colorado : Lynne Rienner Publishers, , 2010