Can someone explain to me what oil/gas (natural resources) has to do the war today?

thank youu!!Can someone explain to me what oil/gas (natural resources) has to do the war today?
It makes us value lives in the middle east more than other conflict areas like the Congo. The price of oil depends on the region's stability because they produce like half of the market's total.Can someone explain to me what oil/gas (natural resources) has to do the war today?
According to a book I read, Bush is protecting his business (oil)
we are fighting for them to have freedom of government. in turn they give us oil considering they have nothing else to pay us with...its an industry
ok i could be soo off the mark but i have been told that is has something to do with the fact that oil/gas pipelines run through these countries we're fighting with and come to england from russia....because were having to buy most of our fuel from there as ours is running out in the north sea.....but these countries are trying to blow these pipelines up to intercept it - thats as far as my knowledge goes!!!!!!