No-one really thought that Klaus Iohannis, Romania’s president since 2014, was going to be the next secretary general of Nato. Iohannis put himself forward in March as a candidate who would bring a new perspective to the leadership of the alliance, but it was never a plausible bid. When Romania’s Supreme Council of National Defence announced last week that Iohannis was withdrawing his name, it removed the last obstacle for Mark Rutte, the Dutch prime minister, to be anointed.