By Parisa Hafezi DUBAI (Reuters) -British-Iranian aid worker Nazanin Zaghari-Ratcliffe and dual national Anoosheh Ashoori flew out of Iran on Wednesday, ending a long ordeal during which they became a bargaining chip in Iran’s talks with the West over Tehran’s nuclear programme. Omani state television said the pair had arrived in the capital Muscat following their release in Tehran. Earlier, a video aired by Iran’s Tasnim news agency, affiliated to the elite Revolutionary Guards, showed a woman dressed in black Iranian Islamic clothes, boarding a Royal Air Force of Oman aircraft. “I am very pl…