cnbc's nancy holgrave joins us live from london. how low can it go?that continues to be the question on everyone's mind and it will come as a surprise to many that brent now dipping below the $29 a barrel level and as you already mentioned the news of the lifting of sanctions on iran having a big impact here. it's believed that iran can start to add about 500,000 barrels per day to the global oil supply and keep in mind, there are already concerned this market continues to be oversupplied. added to that, concerns about demand dropping off from china and also some disappointing data out of the united states, adding to concerns that a demand side that's increased in supply could not have come at a worse time but it's not just the oil markets we're watching in relation to the news out of iran, some key european firms also saying indicating they're looking to get back into the market, daimler being one of those, the german company saying it's daimler trucks unit is gearing up for re-entry into iran, talking with some of their partners about restarting a j