Washington DC. The oil reserves of the world's rich nations have fallen to their lowest level since the time former US President George W. Bush was in power. This has been mentioned in a report released by the US Energy Information Administration (EIA) on Tuesday.According to the EIA, global oil reserves are estimated to decrease by 6.3 million barrels per day in the current quarter. A further decrease of 7.66 million barrels per day is expected in the third quarter.Due to the Iran war, the Strait of Hormuz, through which about 20 percent of the world's oil and gas supply...