German President Frank-Walter Steinmeier has warned of the damage to the European Union the success of populists in the European elections could cause. “We have results in France, in Austria and also in Germany that have given anti-European populists a remarkable increase in votes,” Steinmeier told regional public radio station Bayerischer Rundfunk on Tuesday during an official visit to the southern state of Bavaria. “If two or three large countries in the centre of Europe show attempts at disintegration or disintegration tendencies, then this is not entirely harmless for Europe,” said Steinme…