Machiavellianism

noun3

1. •
   The political philosophy of Machiavelli, especially the realist doctrine which emphasizes the maintenance of the state above ethical concerns.

   • "Machiavellianism is a radical type of political realism that is applied to both domestic and international affairs." — 2010
2. •
   A political maneuver that exemplifies the philosophy. Unsavory government politics.
3. •
   A psychological construct centered on interpersonal manipulation, lack of empathy, cold affect, and indifference to morality.

   • Machiavellianism refers to interpersonal strategies that advocate self-interest, deception, and manipulation, so it would seem inherently related to core psychopathy and narcissism. — 2011