Obama calls for strong, united Europe

Lower Saxony: US President Barack Obama made an impassioned plea for European unity in the face of rising populism and scepticism about the European Union Monday, urging the continent to recognise its own achievements.

"A strong and united Europe is a necessity for the world," Obama said in a landmark speech in the German city of Hanover, as he contrasted the prosperity of today with the wars and hardship of the last century.

Visiting a continent reeling from a migration crisis, economic stasis and facing the prospect of Britain abandoning the European Union, Obama said "the entire world needs a strong and prosperous and democratic and united Europe."

While he admitted that European institutions can be frustrating, he argued "turning inward" is not the answer to Europe`s problems.