The Alliance Française all around the world. I can't think of many other countries that have glorify their own culture internationally, especially in past colonies (like in Vietnam and Cambodia).
The French are hardly the only ones running language and cultural centers abroad. See Portugal's Instituto Camões, Brazil's Centro Cultural Brasileiro, Britain's British Council, France's Alliance Française, Italy's Società Dante Alighieri, Spain's Instituto Cervantes, Germany's Goethe-Institut,and China's Confucius Institute.