By Clare Nuttall in Glasgow Ten years ago former provincial mayor Klaus Iohannis won the Romanian presidential election almost by default as voters turned on his rival after a scandal over overseas polling stations. Now nearing the end of his second and final term as president, Iohannis is looking for his next role. He has formally announced his candidacy to become the first East European head of Nato, but is also understood to be angling for other top positions in Europe. No-one from Central or Southeast Europe has yet headed Nato. The defence club that was started during the Cold War began t…