berlin german foreign minister sigmar gabriel offer qatari counterpart small piece berlin wall tuesday say germany post-war history proof possible overcome deep divisions plague gulf region gabriel say germany keen interest maintain good relations gulf countries work peace region even countries sometimes conflict especially politically trouble time dialogue sometimes slip background important build bridge emphasize things unite us help remove wall gabriel say open new qatar-funded arabic cultural center berlin qatari foreign minister sheikh mohammed bin abdulrahman al thani say hop new center erect neo-classical villa southern part berlin could showcase arab culture help battle stereotype arabs europe sheikh mohammed last week blame call reckless leadership gulf rift qatar current crisis lebanon take apparent aim saudi arabia saudi arabia bahrain unite arab emirates egypt summer cut diplomatic transport trade tie qatar accuse finance terrorism doha deny charge gabriel refer gulf dispute directly laud germany world war two enemies build bridge welcome germany back world community despite devastation horrors nazi regime 70 years saw possible even world war partner first step friends second say tear wall exhaust worth gabriel say full segment wall divide east west germany would deliver museum doha fulfil promise make sister qatar ruler politician particularly days germany ought fulfill promise say hot topic country moment gabriel former leader social democrats spd decline comment chancellor angela merkel failure forge new coalition government pro-business free democrats environmental green merkel press spd reconsider refusal join another grand coalition conservatives move would stave new elections loom germany cite history urge work bridge gulf divisions