Yes, I've heard various definitions for the new KOTN. Russian Federation, China, Korea, Iraq, Iran, Canada (hehehe), and the current speculation is Islam. I'm not sure how Islam, a religion, fits but perhaps they mean the Islamic countries acting together will form some sort of empire or confederation and become the KOTN. Anyway just a few weeks ago a friend said she thought it was Iran.
Forget all these speculations....the new KOTN is definitely the United States plus allied countries. Between 1991 and 2001(9/11 !!), the KOTN has changed from Soviet Union to USA. Extreme military power and "Patriot Act Laws" gave the USA a structure typical for totalitaristic regimes - such as "kings of the north". Islam is a religion, but no world power in the sense of a "political imperium".