berlin green want next coalition government push removal nuclear warheads station germany document see reuters show wednesday discussion paper defence foreign policy mention unite state believe 20 nuclear warheads military base buechel western germany accord unofficial estimate chancellor angela merkel try secure fourth term unlikely coalition ecologist green pro-business free democrats fdp conservative bloc lose support far-right election september nato member germany nuclear power 2011 merkel-led government announce plan shut nuclear reactors 2022 fukushima disaster japan within nato want ensure remain nuclear weapons germany withdraw want suspend modernization programme read section document state green position leave office former u.s. president barack obama announce plan modernize nuclear bomb delivery systems laboratories successor donald trump say want strengthen expand country nuclear capability conservatives green fdp hop end exploratory discussions thursday move proper negotiations form government remain divide several key issue include immigration reform euro zone climate policy german green want last nuclear weapons withdraw document