 Some left-libertarians endorse further “state-like” activities for the state, which other libertarians would reject. Since most left-libertarians recognize enforceable duties to compensate others in proportion to the value of the natural resources they possess, the state might forcibly collect and disburse these payments. Some hold that even various public goods can be forcibly provided, including basic police services, national defense, a basic system of roads, etc. The underlying justification here is that the provision of these public goods will increase the value of natural resources, making the taxed amounts a case of self-financing. (Vallentyne 2007)