Cheaper petroleum spells bad news for oil producers and is challenging received industry wisdom Global oil prices have fallen 25 percent since June, marking the return of oil-price fluctuation as a geopolitical wild card. Although oil prices have been relatively stable — about $100 a barrel — for the past five years, the historical pattern has seen high oil prices boost the strategic clout of producing countries by boosting government coffers, and falling prices have had the opposite effect. The lower prices of the 1980s and ’90s, for example, weakened Russia’s geopolitical position, while the more recent increases have boosted Moscow’s ability to exert influence over former Soviet republics. Higher prices have enabled Venezuela’s leadership to strengthen opposition to U.S. influence throughout Latin America. Fluctuations have had significant effects on economic growth. The fourfold […]