Brent gained around 14 per cent in September
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
