Oil prices have fallen back further towards levels seen before the Iran war started as the US waived sanctions on Iranian oil amid progress in talks to agree a final lasting peace deal.
Brent crude dropped nearly 2% to 76.4 US dollars a barrel at one stage in morning trading on Tuesday, hitting a fresh low since early March and edging closer to the 72 dollars a barrel level seen before the US-Israel war on Iran began on February 28.