TOPSHOTS Green Peace activists climb on the strings of Jerusalem's Chords Bridge during a protest on March 21 2013 to hang a banner saying "Obama Stop Arctic drilling " during the visit of US President Barack Obama in Israel. Police arrested eight Greenpeace activists after members of the group chained themselves to a bridge in Jerusalem demanding US President Barack Obama halt exploratory drilling in the Arctic, an official said. AFP PHOTO/AFP PHOTO/MENAHEM KAHANA