Who's Blowing Up Iran's Gas Pipelines? http://blogs.telegraph.co.uk/news/concoughlin/100050959/whos-blowing-up-irans-gas-pipelines/

'In the past few weeks Iran’s gas infrastructure, which is central to the country’s energy requirements, has been hit by a series of unexplained explosions. The series of mysterious explosions began at the end of July when the state-owned Tehran Times reported that a pipeline carrying gas from Iran to Turkey had exploded near the eastern Turkish town of Dogubayazit. Iranian officials blamed the blast on Kurdish rebels.

This was followed earlier this month by reports in the Iranian press of an explosion in a gas pipeline on the outskirts of Tabriz. A few days later there was a more serious incident on August 4 when five people were killed when another gas pipeline exploded on the outskirts of the Pardis petrochemical plant. The explosion took place just a week after Iranian President Mahmoud Ahmadinejad had made an official visit to the complex. Finally, on August 10, a pipeline exploded in the city of Masjed Sleiman.'