Oil prices climbed about two per cent to a four-month high on Monday on lower crude exports from Iraq and Saudi Arabia and signs of stronger demand and economic growth in China and the US. Brent futures rose $1.45, or 1.7pc, to $86.79 a barrel by 1:50pm EDT (1750 GMT), while US West Texas Intermediate (WTI) crude rose $1.54, or 1.9pc, to $82.58. That pushed both benchmarks into technically o