A ticking time bomb...metaphorically...

Is the stifling effect on ocean transport when, on July 1, a UN rule goes into effect. The mandate, sponsored by the US, requires international ports and cargo ships to be certified as safe from terrorism or else be forbidden to handle cargo. So far, only a fraction have been certified--none in many countries--which can cause a monstrous bottleneck in international trade. A product surely to be affected? Oil.