Test your knowledge of WMDs, from nuclear technologies to nuclear-armed states.

Test your knowledge of major treaties and peace agreements, including the Peace of Westphalia and the Treaty of Versailles.

Test your knowledge of Yemen, from its history to its ongoing civil war.

Test your knowledge of Nigeria, from its economic heft to its struggle against Boko Haram.

Test your knowledge of Cuba, from the missile crisis to its recent reforms.