Oil prices hit their lowest since 2003 in early trading on Monday, as the market braced for a jump in Iranian exports after the lifting of sanctions against the country at the weekend. On Saturday, the U.N. nuclear watchdog said Tehran had met its commitments to curtail its nuclear program, and the United States immediately revoked sanctions that had slashed the OPEC member’s oil exports by around 2 million barrels per day (bpd) since their pre-sanctions 2011 peak to little more than 1 million bpd.