In this concise, single-authored text, renowned scholar and professor Michael Boylan examines the moral justifications underlying key global justice issues and provides students with the analytical tools to approach those issues critically. Introductory chapters establish a thorough but accessible foundation in theory and moral justification, and subsequent chapters apply those concepts to key areas of global concern: poverty; public health; race, gender, and sexual orientation; democracy and social/political dialog; globalization; the environment; war and terrorism; and immigrants and refugees.