For liberals, economic interdependence – sometimes called capitalist peace theory – is believed to discourage interstate conflict by influencing the material power of both states. Second, democratic peace theory, or the belief that democratic states are inherently more peaceful than those governed by authoritarian regimes, is also an important aspect of liberal IR theory. This not only implies that democracies are inherently more peaceful than other types of regimes, but also that the responsibility placed on leaders in democratic systems will lead them not to enter into conflict. Liberal theorists for the most part do not condone violence, but it is important to note that they support the use of force to prevent the violation of basic human rights. This type of intervention is considered legitimate by liberals because force is implemented (or resolved) through collectively formed international institutions, such as the U.S..