Limitations on the right to use force are a key element among the principles by which international law secures the sovereign equality and independence of States against external threats. ‘Sovereignty inside the State’ examines the principles of international law that spell out in positive terms the content of that equality and independence. Each State has the sovereign right to decide upon its social and economic structures, and to lay down laws that will influence the national character of the State and of life within it. The legal concept of jurisdiction determines the reach and priority of those laws. That freedom is not unlimited: it is constrained by obligations of the State under international law.