Brent crude oil futures for July rose 72 cents, or 1.1%, to $67.16 a barrel by 0651 GMT, while U.S. West Texas Intermediate for July was at $64.25 a barrel, up 67 cents, or 1.1%.
Oil prices fell almost 3% last week after Iran’s president, Hassan Rouhani, said the United States was ready to lift sanctions on his country’s oil, banking and shipping sectors.
“Iran’s oil production has been rising in recent months, likely in anticipation of a lifting of the sanctions,” ANZ analysts said in a note on Monday.
However, the speaker of Iran’s parliament said on Sunday a three-month monitoring deal between Tehran and the U.N. nuclear watchdog had expired and that its access to images from inside some Iranian nuclear sites would cease.
European diplomats said last week that failure to agree an extension of the monitoring deal would plunge wider, indirect talks between Washington and Tehran on reviving the 2015 Iran nuclear deal into crisis. Those talks are due to resume in Vienna this week.
Former President Donald Trump withdrew the United States from the deal in 2018 and re-imposed sanctions.