"On 30th August 1940 Hitler obliged on the Second Vienna Accord that Romania will give 43.942 square kilometers..."

It is not "Second Vienna Accords", but Second Vienna AWARD!!!

In 1940 Romania and Hungary were "browbeaten" into accepting Axis arbitration and this is the appelation under which this arbitration had remained in the historical record. Foreign Ministers Joachim von Ribbentrop of Germany and Galeazzo Ciano of Italy met on 30 August 1940 at the Belvedere Palace, in Vienna. They reduced the Hungarian demands to 43,492 square kilometres (16,792 sq mi), with a population of 2,667,007. The treaty was signed by Hungarian Foreign Minister István Csáky and Romanian Foreign Minister Mihail Manoilescu.

Meanwhile, the Romanian government had acceded to Italy's request for territorial cessions to Bulgaria, another German-aligned neighbor. On 7 September, under the Treaty of Craiova, the "Cadrilater" (southern Dobruja) was returned to Bulgaria.