By Reuters StaffSTOCKHOLM (Reuters) - Finland and Sweden are proceeding “hand-in-hand” towards NATO membership but that the decision to ratify the applications for the two Nordic countries lies with Turkey, Finnish president Sauli Niinisto said on Wednesday. Ankara accuses Stockholm of harbouring what Turkey considers members of terrorist groups, and has demanded their extradition as a step towards giving Sweden’s NATO membership its green light. “If Turkey and Hungary ratify Finland, we will be, as we have requested, members of NATO,” he said