The US asserted in the Pentagon's Quadrennial Defense Review issued in February 2010 that it must deter and defeat "aggression" posed by countries that are potential US enemies.
Sa Quadrennial Defense Review ng US Department of Defense na inilabas noong Pebrero 2010, iginiit ng US na dapat itong humadlang, magtanggol laban sa "agresyon" ng mga bansang may potensyal na maging kalaban ng US at gapiin ang mga ito.