The financial meltdown that started with the bursting of the U.S. housing bubble had worldwide economic repercussions, including recessions, far-reaching regulations, and deep-seated political discontent. Track its buildup and aftermath.

The Somalia-based Islamist insurgent group al-Shabaab has proved resilient, committing brazen terrorist attacks at home and abroad despite strategic setbacks in recent years.

Since 1945, many regime leaders and key figures have been brought before domestic and international courts to answer to charges including genocide and crimes against humanity, amid a larger struggle …