Oil prices could be set to post their fourth consecutive weekly loss despite increasing tensions in the Middle East which could disrupt supplies; analysts say that if realized, that would be the longest losing streak in more than two years. On the whole, it would appear that investor worries over a slowdown in the global economies are having a greater impact on prices than supply concerns. Oil analysts believe that the situation in Iran will likely result in a premium being priced in, much as the recent steep drop was seen as the outcome of markets pricing in a Greek exit. Read more