By Iulian Ernst in Bucharest Russian politicians and diplomats have reacted with threats to reports that Romania is building the largest Nato military base in Europe — a €2.5bn project initiated by Romania in 2019 and expected to take 20 years to complete. The expansion of Romania’s 57 Mihail Kogalniceanu air base on the Black Sea coast, which the Russian officials commented on, is supposed to consolidate Nato’s eastern flank. However, it is important to note the long-term calendar of the project and the fact that it was initiated long before Russia invaded Ukraine in February 2022, with the M…