Brent crude futures declined 0.07 per cent to $99.18 a barrel as of 0119 GMT, while West Texas Intermediate (WTI) futures fell 0.39 per cent to $90.17 per barrel
Oil movements through the region have continued despite the conflict, but further attacks on tankers or infrastructure could increase the risk of more significant disruptions
Iran on Monday threatened retaliation against further US attacks on its assets. The warning followed strikes between the two sides over the weekend, with no diplomatic breakthrough reported
Brent crude futures rose $2.11, or 2.40 per cent, to $90.20 a barrel, while US West Texas Intermediate (WTI) crude gained $1.89, or 2.27 per cent, to $85.30 a barrel
