In its homeland, the Gulen movement is seen as a counterweight to ultra-nationalism.

ECONOMIST: Global Muslim networks

Diplomats from the United States and its four main partners in Kosovo Britain, France, Germany and Italy say that their oversight will be needed until the closely related scourges of organised crime and ultra-nationalism are beaten back.

ECONOMIST: Kosovo

The unprecedented prosperity enjoyed by most Greeks during the past decade helped to disguise some sentiments that were never far below the surface: ultra-leftism (including the violent sort which spills over into terrorism), ultra-nationalism and xenophobia.

ECONOMIST: The Greek crisis