(Undated) -- Five Arab countries are rife with corruption. A list released today by Transparency International puts Syria, Iraq, Libya, Somalia and Sudan in the top ten of the most corrupt nations in the world.

Experts say political instability in those countries is fueling rampant abuse. Afghanistan also made the top-ten of most corrupt nations. Transparency International says Denmark, New Zealand, Finland and Sweden are the world's least corrupt nations.

The annual Corruption Perceptions Index bases its rankings on input from country analysts and business people.