Basque leader Arnaldo Otegi speaks to  supporters after being released from prison on Tuesday. “This is an historic day, we’ll definitely remember this day for years to come,” one supporter said. Photograph: Ander Gillenea/AFP/Getty Images

Arnaldo Otegi, a leading Basque separatist figure who has long been seen as a major influence on the terrorist group Eta, has been freed after six yea(...)