Enormous explosion hit one of Russia's major gas pipelines, sending flames and smoke billowing into the sky There are fears it may be a 'tit-for-tat' after traces of explosives were found at the site of the Nord Stream blast The fireball was visible for miles in every direction today after hitting about 14 miles east of St Petersburg Swedish prosecutor claimed sabotage was the cause of the Nord Stream pipeline blasts of September 26 An enormous explosion has hit one of Russia's major gas pipelines, sending flames and smoke billowing into the sky above and prompting fears it was a...