Oil flows via the Druzhba pipeline from Russia to Hungary have been halted, following a Ukrainian attack on a transformer station, Hungarian Foreign Minister Peter Szijjarto said on Monday. “Ukraine has attacked again the oil pipeline to Hungary, which has halted petroleum transportation to our country,” Szijjarto posted on Facebook. This is yet another attack against Hungary’s energy security and it is “outrageous and unacceptable,” the official added. The Druzhba pipeline carries Russian crude to Central Europe.…