Germany's far-right AfD chooses nationalist as co-leader

By Sabine EhrhardtHANOVER, Germany (Reuters) - Members of the anti-immigrant Alternative for Germany (AfD) party elected a right-wing nationalist to be their co-leader on Saturday, signaling a possible toughening of tone before regional votes next year.A party congress chose Alexander Gauland - who once defended an AfD member who had said history should be rewritten to focus on German victims of World War Two - to return to the post he had held until 2015.As members deliberated, thousands of ant