India and China cannot rely on US oil as Iran troubles heat up

The threat to the Asia's vital oil supplies from the Middle East has escalated sharply since four oil tankers were sabotaged in the Gulf of Oman on May 13. A second attack on oil vessels in the region in June, the arrest of a British-flagged oil tanker by Iran's revolutionary guards, and the U.S. and Iran shooting down each other's surveillance drones in the area -- these all point to a protracted problem that could become much worse before it gets better.