Do we have moral duties to people in distant parts of the world? If so, how demanding are these duties? And how can they be reconciled with our obligations to fellow citizens? Every year, millions of people die from poverty-related causes while countless others are forced to flee their homes to escape from war and oppression. At the same time, many of us live comfortably in safe and prosperous democracies. Yet our lives are bound up with those of the poor and dispossessed in multiple ways: our clothes are manufactured in Asian sweatshops; the oil that fuels our cars is purchased from African and Middle Eastern dictators; and our consumer lifestyles generate environmental changes that threaten Bangladeshi peasants with drought and famine. These facts force us to re-evaluate our conduct and to ask whether we must do more for those who have less. Helping students to grapple with big questions surrounding justice, human rights, and equality, this comprehensive yet accessible textbook features chapters on a variety of pressing issues such as Immigration, International Trade, War, and Climate Change. Suitable for undergraduate and graduate students alike, the book also serves as a philosophical primer for politicians, activists, and anyone else who cares about justice.