hanover germany u.s. president barack obama say sunday would whatever could advance controversial trade deal european union last eight months office warn time run short obama push complete two trade agreements term end jan. 20 pacific nations eu run grow swell populist concern impact job consumer protections environment time side concede business leaders hanover messe massive industrial trade fair complete negotiations year upcoming political transition unite state europe would mean agreement finish quite time obama germany promote transatlantic trade investment partnership ttip german chancellor angela merkel issue overshadow discussions crises syria ukraine libya two leaders meet monday set hold talk british prime minister david cameron french president francois hollande italian prime minister matteo renzi issue first dinner 17th century palace chief executives large u.s. german company microsoft dow lockheed martin honeywell basf bayer siemens also dinner matthias müller ceo volkswagen whose company admit cheat diesel emissions test unite state scandal involve 11 million vehicles worldwide obama normally sit lengthy open ceremonies sign political capital spend trade affection merkel take front row seat unusual interpretative dance performance feature robots futuristic music acrobatic break-dance day obama arrive thousands protesters hold placard slogans like stop ttip march express opposition deal motorcade whiz past drive north german city obama acknowledge message benefit trade break though benefit oftentimes diffuse whereas particular plant business feel hurt outside competition feel acutely tell reporters obama say hop deal supporters say could boost economies side atlantic 100 billion would agree year final ratification take time trans pacific partnership first queue u.s. congress clamor hold final vote obama say could change democratic republican party make final selections candidates summer heat campaign people naturally go worry lose gain respect trade agreements say germany last stop six-day foreign tour obama seek shore u.s. alliances view important economy also defeat islamic state militants counter russian intervention syria ukraine strong growth europe particularly important give array press challenge whether security defense migration refugees obama say obama come germany london urge britons vote stay european union closely-watched june referendum face back queue non-eu member hop new trade deal u.s. early week meet gulf leaders riyadh try allay fear washington become less commit security especially nuclear deal iran regional rival saudi arabia obama say deeply concern surge violence syria government force step bomb rebel-held areas around strategic city aleppo merkel urge party participate trouble peace talk geneva agree humanitarian zone flee syrians could feel safe bombardment obama make clear favor creation classic safe zone would need protect foreign force leaders express concern ceasefire violations eastern ukraine say sanction impose russia follow 2014 intervention could ease situation grind improve tie washington berlin reach low point three years ago follow revelations widespread surveillance german citizens include bug merkel mobile phone u.s. national security agency recent years two cold war ally patch things obama praise merkel steady leadership handle europe refugee crisis say decision last year welcome hundreds thousands migrants germany put right side history joke merkel lack easy-going charm really good sense humor even always public display draw chuckle 61-year-old chancellor merkel refuse draw ask whether concern might soon work donald trump lead republican candidate president label refugee policies insane say watch american election campaign interest obama merkel push trade deal foreign crises weigh