hamburg french president emmanuel macron say saturday give try get u.s. counterpart donald trump change mind withdraw unite state paris climate change agreement final statement group 20 leaders meet hamburg saturday expose divide remain unite state g20 members 2015 paris accord aim combat climate change macron also say would host summit dec. 12 move paris deal forward dec. 12 two years paris climate agreement therefore convene summit take action climate notably financial front macron tell reporters say summit would aim mobilize private public finance project commit paris agreement ask try persuade trump change mind climate deal macro say never despair convince think duty give position trait character macron trump meet g20 summit hamburg trump travel france bastille day military parade july 14. france 's macron say continue press trump climate agreement