EghtesadOnline: Oil prices surged on Monday, with Brent crude posting its biggest intra-day percentage gain since the Persian Gulf War in 1991, after an attack on Saudi oil facilities on Saturday shut over 5% of global supply .

EghtesadOnline: Oil prices rose on Tuesday with the reimposition of US sanctions against major crude exporter Iran expected to tighten global supply . Spot Brent crude oil futures were $74.17 per barrel, up 42 cents, or 0.6%, from their last close, CNBC reported.