President Barack Obama has said he is confident Germany will step up to the plate to make the NATO mission in Afghanistan a success.His comments came at a news conference with German counterpart Angela Merkel. Ahead of this weekend’s NATO summit the German Chancellor touched on relations with Iran and the middle east. ‘‘We have to develop relations with Iran in such a manner that a nuclear threat is excluded. We are very happy that the US is looking at a new approach and we have evidently spoken on the middle east where of course a two state solution to the peace process needs to be pursued,’‘ Merkel said. Obama called on allies to strengthen their efforts in fight against the Taliban. ‘‘As we celebrate this important landmark for NATO, we are reminded that not only do we have immediate joint efforts in Afghanistan, which have to be bolstered and become more effective, but we also have a strategic framework for how NATO moves forward. This has been the most successful alliance in modern history,’‘ Obama said. Nato’s relations with Russia are also up for discussion during the two day conference.