You will find joy, frustration and sorrow in your quest. Never forget that friendship and loyalty are more precious than riches. . . Happiness can be brief, but it knows no time in the land of dreams.
Lower oil prices won't, by themselves, topple the mullahs in Iran. But it's significant that, historically, when oil prices have been low, Iranian reformers have been ascendant and radicals relatively subdued, and vice versa when prices have been high.