epa04380759 A pressure gauge at gas compressor station in the eastern Slovak town of Velke Kapusany, near the border with Ukraine, Slovakia, 02 September 2014. Ukrainian PM Yatsenyuk travelled to Slovakia to attend the opening of a gas pipeline that would send Russian gas back to Ukraine. The so-called reverse flow has been criticized by Russian energy giant Gazprom as a breach of existing contracts. The pipeline will transport some 10bcm of natural gas to Ukraine per year. EPA/FILIP SINGER
