FILE PHOTO: A monitoring instrument seen on the gas distribution pipeline in Beregdaroc, Hungary, one of several points where Russian gas crosses into the European Union, on February 10, 2015. REUTERS/Laszlo Balogh/File Photo
FILE PHOTO: A monitoring instrument seen on the gas distribution pipeline in Beregdaroc, Hungary, one of several points where Russian gas crosses into the European Union, on February 10, 2015. REUTERS/Laszlo Balogh/File Photo