Economic sanctions are intensively used by international institutions to enforce political objectives. Since 2006 the EU has been implementing general sanctions against the whole economy of Iran, affecting their trade relations. Since 2007, and following the imposition of sanctions by the UN...

Biodiversity provides essential services to human societies. Many of these services are provided as public goods, so that they will typically be underprovided both by market mechanisms (because of the impossibility of excluding non-payers from using the services) and by government-run systems...