It is very much true, so much true that if you were to ask any economist or any other expert in the oil market about the high prices of oil, there would be two things that would always come up: the rise of Asian industries and the Middle-East conflicts. Asia's growing industries cause more dependency on oil, increasing the price, whereas the conflicts in the Middle-East make it more difficult and therefore more expensive for oil companies to drill for oil in war-torn zones. There are other mitigating factors (such as the US slump) but, looking at oil prices globally, these are the two factors. Want proof? Look up any graph of global oil prices and note sharp spikes in price just after we invade Iraq in both Gulf Wars.
I know I'm pretty anti-Bush but no one can deny that he has some part to play in the global rise of oil prices, and Republicans need to know that they're being hypocrites if they both support the conflict and yet want oil prices to come down.
On an interesting note, oil prices last took their biggest plummet due to September 11th. Since many right-wing "experts" say unequivocally that if Obama is elected president, something akin to 9/11 will happen again. I guess if people really want low oil prices, you should vote for Obama!