week 30: twilight in the desert?

Sometimes I wonder if the increasing nationalization taking place in the oil and gas industry is more than just opportunistic resource grabbing while prices are high and instead a sign of something much worse. Prices have gone up before and this happens because countries are trying to secure their revenue streams. When prices go down, those countries are often suddenly interested in foreign investment. But will prices go down again or is this the beginning of a long, gradual increase in prices. Is it twilight in the desert?