Oil and product prices regained their upward momentum Friday as limited progress in U.S.-Iran nuclear talks and evacuations by Washington of diplomatic staff and their families in the Middle East raised expectations of an imminent military strike on Tehran.

Oil and product futures fell Thursday morning ahead of the third round of nuclear talks between the U.S. and Iran in Geneva.

Oil and product futures closed little changed Wednesday as fears of military action against major OPEC member Iran offset a massive build in weekly crude inventories reported by the U.S. Energy Information Administration (EIA).

Oil and product futures were mostly higher Wednesday as both Iran and the U.S. indicated they would make little concession in talks over the White House's attempt to shut down Tehran's nuclear program.

Oil and product futures reversed Tuesday's early gains to settle lower as the U.S. appeared determined to stay on the path diplomacy in getting Iran to dismantle its nuclear program.

Oil and product futures were mostly higher Tuesday morning, hovering near July peaks, as tensions between the U.S. and Iran stayed elevated ahead of negotiations scheduled for this week.

Oil futures hit six-month highs Monday before settling lower as the U.S. committed to another round of talks with Iran in what remains a volatile situation for the Middle East.