DUBAI, UAE, Sept 19: Iran’s top diplomat said Thursday that any attack on his country over a drone-and-missile strike on Saudi Arabia’s oil industry will result in “all-out war,” further pushing up tensions across the Persian Gulf.

OSLO, April 12: When Norway’s largest political party decided that the Lofoten Islands in the north should not be opened up to oil exploration, a chill ran down the spine of the energy industry.