In 1945, UNESCO was created in order to respond to the firm belief of nations, forged by two world wars in less than a generation, that political and economic agreements are not enough to build a lasting peace. Peace must be established on the basis of humanity’s moral and intellectual solidarity.

UNESCO strives to build networks among nations that enable this kind of solidarity, by:

• Mobilizing for education: so that every child, boy or girl, has access to quality education as a fundamental human right and as a prerequisite for human development.
• Building intercultural understanding: through protection of heritage and support for cultural diversity. UNESCO created the idea of World Heritage to protect sites of outstanding universal value.
• Pursuing scientific cooperation: such as early warning systems for tsunamis or trans-boundary water management agreements, to strengthen ties between nations and societies.
• Protecting freedom of expression: an essential condition for democracy, development and human dignity.

(Source: http://en.unesco.org/about-us/introducing-unesco)