THE INSTITUTE FOR ECONOMICS AND PEACE – The threat of terrorist attacks and the likelihood of violent demonstrations were the two leading factors (1) making the world less peaceful in 2011, according to the latest Global Peace Index (GPI), released May 25, 2011. This is the third consecutive year that the GPI, produced by the Institute for Economics and Peace (IEP), has shown a decline in the levels of world peace. The economic cost of this to the global economy was $8.12 trillion in the past year.