Among the precious few beneficiaries of BP’s mother-of-all-oil spills (outside those who shorted the company's stock) may be diplomacy with Cuba. Or more precisely: oil diplomacy.

Earlier this year, Iranian President Mahmoud Ahmadinejad arrived in China -- and quickly made himself at home. The occasion was a meeting of the Shanghai Cooperation Organization (SCO), a regional group linking China, Russia, and Central Asia. During the summit, Ahmadinejad seemed to be everywhere. He posed, arms linked, with Russian and Chinese officials, who said nothing as he called for "impartial and independent experts" to investigate whether the Holocaust happened. He delivered a major address broadcast on Chinese state television.