Book excerpt: Underpinned by the work of major thinkers such as Marx, Locke, Weber, Hobbes and Foucault, the first half of the book looks at political concepts including: the state and sovereignty; the nation; democracy; representation and legitimacy; freedom; equiality and rights; obligation; and citizenship. There is also a specific chapter which addresses the role of ideology in the shaping of politics and society. The second half of the book addresses traditional theoretical subjects such as socialism, Marxism and nationalism, before moving on to more contemporary movements such as environmentalism, ecologism and feminism.