For politicians, keen to portray ETA as weakened after a number of high-profile arrests, today’s bomb and yesterday’s early morning blast at a barracks in northern Spain are grim reminders of the group’s deadly capability.The explosion in Burgos, a powerful car bomb, wounded 65 people, but amazingly no-one died as the front of the building was virtually blown off. The size of the bomb, about 300 kilos, shows that the terrorists still have the capacity to launch big attacks. The cue for the violence came in March when separatist groups were excluded from standing in Basque regional elections. ETA described the incoming administration as ‘prime targets’. Tomorrow is the 50th anniversary of the founding of ETA, with the bombings a deadly birthday present for the Spanish government.