Barack Obama on G7 unity mission as US president looks to repair German ties
US president will aim to tackle anti-American sentiment sparked by US spying controversies and negotiate pacts on terrorism and global trade Demonstrators wear masks of world leaders during an Oxfam protest in Garmisch-Partenkirchen, southern Germany on Saturday. Photograph: Markus Schreiber/AP Sunday 7 June 2015 06.14 Barack Barack Obama will aim to show unity on global challenges with western allies,