Presents the theories of International Relations and explains how the different perspectives shape our understanding of the root causes of historical events and current controversies in global affairs. Provides coverage of: the rise of ISIS; an increasingly assertive Russia; Chinese power in the Far East; developments in Iran, Iraq, Egypt and other countries in the Middle East; the Greek debt crisis and the threat to the Eurozone; the use of social media in protest activities; slowing economic growth worldwide; the acceleration of migrant and refugee flows; and the latest developments in climate change.